Statistics Questions

10 The following data represents the last ten field goal attempts in yards made by a kicker 54 29 33 62 45 39 41 52 59 36 Find the MAD Find the Variance Find the Standard Deviation

23 A survey was conducted among office workers regarding if their preferences on coffee versus soda The Venn diagram below represents the responses Survey of Office Workers Drinks Coffee Drinks Soda 31 12 25 83 Find the following probabilities as a fraction do not simplify P Coffee only P S P CUS P CS

A total of 200 people attend a party as shown in the table A person is selected at random to win a prize The probability of selecting a female is 0 6 The probability of selecting a child given that the person is a female is 0 25 The probability of selec a male given that the person is a child is 0 4 Complete the two way table to show the number of adults children males and females who attended the party Male Female TOTAL Adults 150 Children 50 TOTAL 80 120 200

22 The probability that the event A occurs is 3 is the probability that A occurs given that B occurs Answer Note Use slash to separate numerator from denominator the probability that event B occurs is 5 8 and the probability that events A and B both occur is 9

7 Two terms of the arithmetic sequence an are a4 40 and ag 28 What is a recursive formula for this sequence an 17 an 1 a 108 Ban 17an 1 a 91 an 17 an 1 a 91 an 17an 1 a 108

21 At Kennedy Middle School the probability that a student takes Technology and Spanish is 0 087 The probability that a student takes Technology is 0 68 What is the probability that a student takes Spanish given that the student is taking Technology Type your result in the empty box provided below in decimal form rounded to the hundredth place Answer

What is the sum of the first nine terms of the given geometric series 6 24 96 384

B You pick a card at random from the following cards put it back and then pick another card at random Find P blue blue Write your result in th empty box provided below Answer into numerator and denominator

17 In a class of 25 students 3 2 of the class are boys of the class have blonde hair and of the class are boys with blonde hair 5 If one student is to be chosen at random from the class what is the probability that the student is a boy or has blonde hair Show your work on the scratchpad P boy or blonde hair

5 The probability that event A occurs is 7 A and B both occur Write your result in the empty box provided below in a simplest fraction form P A and B Note Use slash to separate numerator and denominator 2 and the probability that event B occurs is If A and B are independent events what is the probability that 3

Given P A 0 20 P B 0 70 P BIA 0 55 and P A B 0 16 which statement is correct about events A and B A is the complement of B B A and B are independent events A and B are dependent events DB is the complement of A

Classify each sequence as arithmetic geometric or neither DRAG DROP THE ANSWER 7 4 1 2 64 32 16 8 1 3 7 13 2 4 6 8 4 5 9 14 1 3 9 27 81 Arithmetic C Geometric Neither

Find the sum of the series 7n 17 n 1

Find the explicit formula for the given sequence 4 12 36 108 a 5 3 1 9 15 3 1 a 4 3 1

4 What is the summation formula for the series below 4 8 16 32 2048 10 B 10 C 4 4n 6 2 4 1 n 1 10 2n 6 n 1 10 4 2 n 1 n 1

340 340 310 320 310 360 350 330 260 380 340 320 310 360 350 330 ake a dotplot of these data type Dotplot ow boxplot 260 270 280 290 300 310 320 330 340 350 360 370 Calories per Serving alain what the dot above 260 represents 380

4 Is the variability in nitrate concentrations for the two streams similar or different Justify your answer Variability the SPREAD

State Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Dist of Columbia Florida Georgia Hawaii Idaho Illinois Indiana Iowa Med 1985 1996 2002 70 4 71 0 73 5 61 2 62 9 67 3 64 7 62 0 65 9 66 6 66 6 70 2 54 2 55 0 58 0 63 6 64 5 69 1 69 0 69 0 716 70 3 71 5 75 6 37 4 40 4 44 1 67 2 67 1 68 7 62 7 69 3 71 7 51 0 50 6 57 4 71 0 71 4 73 0 60 6 68 2 Bus 3 7 Soc State 33 31 19 25 23 27 11 9 29 3 17 9 2 5 8 2 9 1 3 3 34 The following data are the resting pulse rates for 30 randomly selected individuals who were participants at a 10K race Montana Nebraska Nevada COST 49 40 59 56 55 70 49 59 55 49 58 54 56 55 65 57 61 41 52 60 49 57 3 35 Consumer Reports in its May 1998 issue provides cost per daily feeding for 28 brands of dry dog food and 23 brands of canned dog food Using the Minitab computer program the following side by side boxplot for these data was created 3 5 3 0 2 5 2 0 1 5 1 0 5 0 a Construct a stem and leaf plot of the pulse rates b Construct a boxplot of the pulse rates c Describe the shape of the distribution of the pulse rates d The boxplot provides information about the distribution of pulse rates for what population DOG FOOD COSTS BY TYPE OF FOOD New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming 3 10 The following table presents homeownership rates in percentages by state for the years 1985 1996 and 2002 These values represent the proportion of homes owned by the occupant to the total number of occupied homes CAN TYPE a From these graphs determine the median lower quartile and upper quartile for the daily costs of both dry and canned dog food b Comment on the similarities and differences in the distributions of daily costs for the two types of dog food Summarizing Data from More Than One Variable Graphs and Correlation 70 2 67 6 74 2 75 0 69 9 72 8 73 9 68 3 67 5 70 2 Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri 68 5 73 2 73 5 70 2 64 9 67 1 73 7 76 5 73 9 65 6 66 9 72 0 60 5 61 7 62 7 70 7 73 3 76 0 70 0 75 4 77 3 69 6 73 0 74 8 69 2 70 2 74 6 Source U S Bureau of the Census http www census gov ftp pub hhes www hvs html 3 36 For the homeownership rates given in Exercise 3 10 construct separate boxplots for the years 1985 1996 and 2002 1985 66 5 68 6 68 5 66 8 57 0 61 1 65 5 65 0 62 3 64 6 68 2 67 1 70 3 50 3 68 0 52 7 55 0 70 4 70 0 69 5 69 9 68 2 67 9 69 2 72 0 69 4 70 5 68 4 61 5 63 1 66 2 56 6 59 6 71 6 71 7 74 0 61 4 72 0 72 9 77 3 67 6 67 8 71 5 67 6 68 8 70 1 60 5 61 8 63 8 71 5 72 7 72 7 69 5 70 2 70 3 68 5 74 3 68 5 66 8 63 1 67 0 75 9 74 3 77 0 63 8 68 2 72 0 73 2 68 0 72 8 b What major differences exist among the plots for the three years c Why do you think the plots have changed over these 17 years 1996 2002 69 3 68 4 54 55 72 51 46 55 63 55 DRY 65 5 69 5 67 2 a Construct relative frequency histogram plots for the homeownership data given in the table for the years 1985 1996 and 2002 d How could Congress use the information in these plots for writing tax laws that allow major tax deductions for homeownership PIC COLLAGE

for the homeownership rates give a Compare the mean and median for the 3 years of data Which value mean or median is more appropriate for these data sets Explain your answers b Compare the degrees of variability in homeownership rates over the 3 years 3 10 The following table presents homeownership rates in percentages by state for the years 1985 1996 and 2002 These values represent the proportion of homes owned by the occupant to the total number of occupied homes OC Compute the mean median and standard Exercise 3 10 State Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Dist of Columbia Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota 1985 1996 2002 70 4 71 0 73 5 61 2 62 9 67 3 64 7 62 0 65 9 66 6 66 6 70 2 54 2 63 6 55 0 58 0 64 5 69 1 69 0 69 0 71 6 70 3 71 5 75 6 40 4 44 1 67 2 67 1 68 7 37 4 62 7 69 3 71 7 51 0 50 6 57 4 71 0 71 4 73 0 60 6 68 2 70 2 67 6 69 9 72 8 74 2 75 0 73 9 68 3 67 5 70 2 68 5 73 2 73 5 70 2 64 9 67 1 73 7 76 5 73 9 65 6 66 9 72 0 60 5 61 7 62 7 70 7 73 3 76 0 70 0 75 4 77 3 69 6 73 0 74 8 69 2 70 2 74 6 Missouri Source U S Bureau of the Census State Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming 1985 1996 2002 66 5 68 6 69 3 68 5 66 8 68 4 57 0 61 1 65 5 65 5 65 0 69 5 62 3 64 6 67 2 68 2 67 1 70 3 50 3 52 7 55 0 68 0 70 4 70 0 69 9 68 2 69 5 67 9 69 2 72 0 70 5 68 4 69 4 61 5 63 1 66 2 71 6 71 7 74 0 61 4 56 6 59 6 72 0 72 9 77 3 67 6 67 8 71 5 67 6 68 8 70 1 60 5 61 8 63 8 71 5 72 7 72 7 69 5 70 3 70 2 68 5 68 5 74 3 66 8 63 1 67 0 77 0 75 9 74 3 63 8 68 2 72 0 73 2 68 0 72 8 http www census gov ftp pub hhes www hvs html a Construct relative frequency histogram plots for the homeownership data given in the table for the years 1985 1996 and 2002 b What major differences exist among the plots for the three years c Why do you think the plots have changed over these 17 years d How could Congress use the information in these plots for writing tax laws that allow major tax deductions for homeownership

3 2 The type of vehicle the U S public purchases varies depending on many factors Table 1060 from the U S Census Bureau Statistical Abstract of the United States 2012 provides the following data The numbers reported are in thousands of units that is 9 300 represents 9 300 000 vehicles sold in 1990 Year Type of Vehicle 1990 1995 2000 2005 2007 2008 2009 2010 Passenger Car 9 300 8 500 8 852 7 720 7 821 7 618 6 814 5 456 5 729 SUV Light Truck 4 560 6 340 8 492 9 228 8 683 8 471 6 382 4 945 5 826 2006 a Construct a graph that would display the changes from 1990 to 2010 in the public s choice in vehicle b Do you observe any trends in the type of vehicle purchased What factors may be influencing these trends

3 5 The National Highway Traffic Safety Administration has studied the use of rear seat auto mobile lap and shoulder seat belts The number of lives potentially saved with the use of lap and shoulder seat belts is shown for various percentages of use Percentage of Use 100 80 60 40 20 10 Lives Saved Wearing Lap Belt Only 529 423 318 212 106 85 Lap and Shoulder Belt 678 543 407 271 136 108 Suggest several different ways to graph these data Which one seems more appropriate and

Federal Program National Defense Social Security Medicare Medicaid National Debt Interest Major Social Aid Programs Other 2014 Expenditures billions of dollars 612 852 821 253 562 532 a Construct a pie chart for these data b Construct a bar chart for these data c Construct a pie chart and bar chart using percentages in place of dollar d Which of the four shorts in ro infor oublia

3 7 The survival times in months for two treatments for patients with severe chronic left ventricular heart failure are given in the following tables 4 14 29 6 Standard Therapy 15 24 2 16 6 13 10 1 27 32 7 13 12 18 14 15 21 20 8 3 24 9 5 20 29 15 7 32 36 19 35 10 16 39 10 16 12 13 16 18 33 30 29 31 27 31 36 17 15 18 27 14 New Therapy a Construct separate relative frequency histograms for the survival times of both the therapies b Compare the two histograms Does the new therapy appear to generate a longer

3 10 The following table presents homeownership rates in percentages by state for the years 1985 1996 and 2002 These values represent the proportion of homes owned by the occupant to the total number of occupied homes State Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Dist of Columbia Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri 1985 1996 2002 70 4 71 0 73 5 61 2 62 9 67 3 64 7 62 0 65 9 66 6 66 6 70 2 54 2 55 0 58 0 63 6 64 5 69 1 69 0 69 0 71 6 70 3 71 5 75 6 37 4 40 4 44 1 67 2 67 1 68 7 62 7 69 3 71 7 51 0 50 6 57 4 71 0 71 4 73 0 60 6 67 6 69 9 68 2 70 2 75 0 73 9 70 2 73 5 70 2 64 9 67 1 73 7 76 5 73 9 65 6 66 9 72 0 60 5 61 7 62 7 68 3 68 5 74 2 72 8 67 5 73 2 70 7 73 3 76 0 70 0 75 4 77 3 74 8 74 6 State Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming 1985 1996 2002 66 5 68 6 69 3 68 5 66 8 68 4 57 0 61 1 65 5 65 5 65 0 69 5 62 3 64 6 67 2 70 3 55 0 70 0 69 5 72 0 69 4 66 2 74 0 59 6 77 3 71 5 68 2 50 3 68 0 69 9 67 9 70 5 61 5 71 6 61 4 72 0 67 6 67 6 60 5 67 1 52 7 70 4 68 2 69 2 68 4 63 1 69 6 73 0 69 2 70 2 Source U S Bureau of the Census http www census gov ftp pub hhes www hvs html 71 7 56 6 72 9 67 8 71 5 72 7 69 5 70 3 68 5 66 8 68 8 61 8 b What major differences exist among the plots for the three years c Why do you think the plots have changed over these 17 years 75 9 74 3 63 8 68 2 73 2 68 0 68 5 63 1 70 1 63 8 72 7 70 2 74 3 67 0 77 0 72 0 72 8 a Construct relative frequency histogram plots for the homeownership data given in the table for the years 1985 1996 and 2002 d How could Congress use the information in these plots for writing tax laws that allow major tax deductions for homeownership

3 6 Med Med Bus 3 7 The Boxplot 3 33 Construct a boxplot for the following measurements 33 31 19 25 23 27 11 9 29 3 17 9 2 5 8 2 9 1 3 3 34 The following data are the resting pulse rates for 30 randomly selected individuals who were participants at a 10K race 49 40 59 56 55 70 49 59 55 49 58 54 55 72 51 54 56 55 65 57 61 41 52 60 49 57 46 55 63 55 COST 3 35 Consumer Reports in its May 1998 issue provides cost per daily feeding for 28 brands of dry dog food and 23 brands of canned dog food Using the Minitab computer program the following side by side boxplot for these data was created a Construct a stem and leaf plot of the pulse rates b Construct a boxplot of the pulse rates c Describe the shape of the distribution of the pulse rates d The boxplot provides information about the distribution of pulse rates for what population 3 5 3 0 2 5 2 0 1 5 1 0 5 0 DOG FOOD COSTS BY TYPE OF FOOD CAN TYPE DRY a From these graphs determine the median lower quartile and upper quartile for the daily costs of both dry and canned dog food b Comment on the similarities and differences in the distributions of daily costs for the two types of dog food Summarizing Data from More Than One Variable Graphs and Correlation 3 10

3 27 In the study described in Exercise 3 26 the researchers also recorded the ages of the eight acers Age years 39 38 31 26 18 36 20 31 a Calculate the sample standard deviation of the eight racers ages b Why would you expect the standard deviation of the racers ages to be larger than the standard deviation of their years of experience

J F 3 4 data Do there seem to be any cyclic or seasonal effects Basic M 101 9 93 0 93 5 93 9 109 0 98 4 99 1 110 7 115 5 104 5 105 1 105 4 122 0 110 4 128 1 115 8 A M J J A 104 9 94 6 105 9 116 7 100 2 112 1 123 8 117 5 106 4 118 6 110 8 111 2 124 4 112 4 124 9 116 0 117 2 130 7 117 5 131 8 S 135 8 124 8 130 9 138 0 145 5 0 Describing Data on a Single Variable Measures of Central Tendency 3 14 Compute the mean median and mode for the following data N 128 4 118 2 107 3 108 6 114 9 112 9 114 1 143 7 132 2 120 8 121 3 151 5 139 5 127 7 128 0 159 3 146 5 134 0 134 2 D

Suppose that a polling company surveyed 600 people about how much time they spend reading each week The results of this survey were compiled and used to create this relative frequency histogram Relative frequency 30 65 20 10 10 30 0 90 120 Weekly minnes of reading 180 Assume that all percentages shown in the histogram are whole numbers Each of the hars in this histogram includes only the left endpoint of the class except for the last bar which also includes the right endpoint What percentage of respondents said that they read less than 90 minutes per week 210 270 How many respondents said that ty read between 60 and 120 minutes per week

Draw and discuss the FBD for the following system Label all forces and directions How many unknowns are there Remember an unknown does not have to be a force It can also be a dimension angle etc How many equilibrium equations can you create Is there enough information to solve for the unknowns Explain Draw pulley A as your particle B 20

B Practice drawing FBDS 10 lb A B O E A AB 0 2 0 5 m A GO B 30 BC 0 1 A B

Entered A 10 8 and 14 2 34 At least one of the answers above is NOT correct B 7 4 and 17 6 0 16 0 5 Percentage 34 C 9 1 and 15 9 Percentage 0 16 Answer Preview Percentage 0 5 34 0 16 The price earnings PE ratios of a sample of stocks have a mean value of 12 5 and a standard deviation of 1 7 If the PE ratios have a bell shaped distribution use the 68 9 99 7 Rule to estimate the percentage of PE ratios that fall between 0 5 Result incorrect incorrect incorrect

The price earnings PE ratios of a sample of stocks have a mean value of 12 5 and a standard deviation of 1 7 If the PE ratios have a bell shaped distribution use the 68 95 99 7 Rule to estimate the percentage of PE ratios that fall between A 10 8 and 14 2 Percentage B 7 4 and 17 6 Percentage C 9 1 and 15 9 Percentage artial credit on this problem

The distribution of heights of adult men in the U S is approximately normal with mean 69 inches and standard deviation 2 5 inches Use what you know about a normal distribution and the 68 95 99 7 rule to answer the questions in parts a b c below Your answer must be entered in the correct format If your answer is a percent such as 25 percent enter 25 PERCENT without the quotes If your answer is in inches such as 10 inches enter 10 INCHES without the quotes and with a space between the number and the INCHES If your answer is an interval such as 14 to 15 inches then enter 14 TO 15 INCHES without the quotes Don t report accuracy greater than what comes from the 68 95 99 7 rule For example if the rule says 10 INCHES then 10 0 INCHES is wrong because the extra decimal place claims too much accuracy If the rule says 1 2 INCHES then 1 20 INCHES is wrong a Between what approximate heights do the middle 95 percent of men fall Answer b About what percent of men are shorter than 66 5 inches Answer c About what percent of men are taller than 69 inches Answer

A Canadian study measuring depression level in teens as reported in the Journal of Adolescence vol 25 2002 randomly sampled 112 male teens and 101 female teens and scored 10 points them on a common depression scale higher score representing more depression The researchers suspected that the mean depression score for male teens is higher than for female teens and wanted to check whether data would support this hypothesis The following hypotheses were tested H H H H H H The following is the edited output for the test Two Sample T Test and Cl Sample 1 M 2 F N Mean StDev SE Me an 112 7 38 6 95 101 7 15 6 31 0 66 0 63 Select one answer Difference mu 1 mu 2 Estimate for difference 95 lower bound for difference 1 271079 T Test of difference 0 230000 T Value 0 25 P Value 0 400 DF 210 Which of the following is an appropriate conclusion based on the output A O The data do not provide sufficient evidence to reject H so we accept it and conclude that male and female teens do not differ in mean depression score B The data provide sufficient evidence to reject H and to conclude that the mean depression score for male teens is larger than that of female teens C O The data do not provide sufficient evidence to conclude that the mean depression score of male teens is larger than that of female teens D O The data provide sufficient evidence to conclude that male and female teens do not differ in mean depression score

Dr Scotch s research involves tracking degeneration of myelin in the brains of older adults and its impact on the ability to perform tasks that require fine motor skills Because this is his specific focus which of the meta theories may he subscribe to contextual maturational mechanistic

primary variable being measured 1 pt 018 Question 1 37 Cont d Consider the Current Population Survey problem What is the a The Current Population Survey b 128 million households c A person s age d The labor force e A person s employment status

20 Question 1 37 Cont d Consider the Current Population Survey problem Is this an pplication of descriptive or inferential statistics Make sure you review your efinitions before answering this question 1 pt a Descriptive b Inferential

017 Question 1 37 in text The employment status employed or unemployed of each individual in the U S workforce is a set of data that is of interest to economists businesspeople and sociologists To obtain information about the employment status of the workforce the U S Bureau of the Census conducts what is known as the Current Population Survey Each month interviewers visit about 60 000 of the 128 million households in the United States and question the occupants 15 year of age or older about their employment status Their responses enable the Bureau of the Census to estimate the percentage of people in the labor force who are unemployed the unemployment rate Define the population of interest to the Census Bureau 1 pt a The number of unemployed people in the U S b All U S people 15 years and older c The 128 million households in the U S d All U S people e The Census Bureau

15 Question 1 30 Cont d Referring to the analysis of the researchers is the variable interest in their study quantitative or qualitative 1 pt a Quantitative b Qualitative c Cannot tell from the problem statement

216 Question 1 30 Cont d Referring to the analysis of the researchers does the dataset analyzed by the researchers represent a population or a sample 1 pt a Population b Sample

Q14 Question 1 30 in text Recall that the National Bridge Inventory NBI is a database maintained by the Federal Highway Administration FHWA Th database contains the NBI is available at the FHWA Web site www fhwa dot gov Using the FHWA inspection information on the structural integrity of highway bridges An analysis of the data from ratings categorized as structurally deficient functionally obsolete or safe About 13 5 of the bridges were found to be structurally deficient while 3 5 were functionally obsolete What is the variable of interest to the researchers 1 pt a NBI data b Highway bridges c Inspection Rating d United States

09 Question 1 29 Cont d Consider the variable Toll bridge which is recorded as or no Is this variable quantitative or qualitative 1 pt a Quantitative b Qualitative c Cannot tell from the problem statement yes

f hours they study each week Is this variable quantitative or qualitative 1 pt 12 UCONN Poll Suppose a poll was conducted for UCONN students to estimate the a Quantitative b Qualitative c Cannot tell from the problem statement

213 UCONN Poll Cont d One of the questions asked on the poll was What time of day ou usually study The possible responses were Morning Afternoon Evening or Other Is this variable quantitative or qualitative 1 pt a Quantitative b Qualitative c Cannot tell from the problem statement

Q1 Question 1 26 in text The National Football League NFL is a lucrative business generating an annual revenue of about 15 billion One key to becoming a financially successful NFL team is drafting a good quarterback QB out of college The NFL draft allows the worst performing teams in the previous year the opportunity of selecting the best quarterbacks coming out of college The Journal of Productivity Analysis Vol 35 2011 published a study of how successful NFL teams are in drafting productive quarter backs Data were collected for 331 quarterbacks drafted over a 38 year period Several variables were measured for each QB including draft position recorded as one of the top 10 players picked selection between picks 11 and 50 or selected after pick 50 NFL winning ratio percentage of games won and QB production score a numeric score where higher values indicate more productive QBs The researchers discovered that draft position is only weakly related to a quarterback s performance in the NFL They concluded that quarterbacks taken higher in the draft do not appear to perform any better What is the experimental unit for this study 1 pt a NFL b Quarterback c Draft position d Top 10 players e Draft ratio

re inspected Q6 Question 1 29 in text All highway bridges in the United States are periodically for structural deficiency by the Federal Highway Administration FHWA Data from the FHWA inspections are compiled into the National Bridge Inventory NBI Several of the nearly 100 variables maintained by the NBI are listed below How was the NBI data obtained 1 pt a By inspection b Using automated software c Downloaded from database d From the Internet et Che 1105

Q3 Question 1 26 Cont d One of the variables in the Drafting NFL Quarterbacks problem is NFL Winning Ratio What type of variable is NFL Winning Ratio 1 pt a Quantitative b Qualitative c Cannot tell from the problem statement

Q5 Question 1 26 Consider the Drafting NFL Quarterbacks problem Suppose you want to use this study to project the performance of future NFL Quarterbacks Would this be an application of descriptive or inferential statistics 1 pt a Descriptive b Inferential

Q4 Question 1 26 Cont d One of the variables in the Drafting NFL Quarterbacks problem is Quarterback Production Score What type of variable is Quarterback Production Score 1 pt a Quantitative b Qualitative c Cannot tell from the problem statement

The histogram below gives the length of service of members of the Department of Chemistry at a particular university The classes in years of service are 0 4 9 5 9 9 etc and the vertical axis represents the number of faculty What percent of the department faculty have less than 25 years of service Answer 9 8 CO 7 6 12 5 4 3 2 1 8 5 12 18 15 Chemistry Faculty 28 25 38 35 48 Tt