Statistics Questions and Answers

2 25 points Find the integral curve solving the equation w 2ry dx x y 1 dy 13 nt One can check that w is not exact Assume the integral multiplier depends only on what does uw being exact tells you

Problem 9 Let Xn be i i d with EXn EXk Let T 1 be a randoz k 1 integer with finite mean ET Prove that if o Xn then o S 0 X ET 0 Consider Sn n

2 Mr Grayson s 12th grade biology class wondered whether they could predict a father s height when they knows his son s height The boys in the class measured and recorded their heights Then they went home and measured and recorded their fathers heights The table shows the results TCH a Identify the explanatory and response variables Son s is x and the fathery Construct a scatter plot using the data Be sure to label the axes and the graph Which type of association exists between the students heights and their fathers heights State the association in terms of the quantities Identify any potential outliers Explain your reasoning Optional Father YA MNFRO 73 72 70 69 68 67 66 65 64 Son Jorge Brian Manuel Kevin Brandon Levi Oscar Paul Trent Xavier Son s Height inches 72 5 68 73 5 70 5 66 71 69 64 5 67 5 73 Father s Height inches 71 69 72 5 71 67 68 69 73 69 5 72 5 64 65 66 67 68 69 70 71 72 73 Son

X p x Solve the following questions 1 5 Question 5 View O 3 35 O 2 8 2 0 3 2 1 0 2 Let Z 2X Find the expectation of Z Screen Shot 2023 02 16 1 0 2 Q Q Zoom 2 0 3 Share C Highlight Rot

2 3 pts Scores on the Quantitative Reasoning portion of the Graduate Record Exam GRE are Normally distributed with a mean of 153 points and a standard deviation of 7 67 points Define draw and label a Normal curve and use Onlinestatbook to find the cutoff score required to be in the 90th percentile

X p x Solve the following questions 1 5 View Question 4 2 0 3 O 0 7 O 0 2 O 0 5 1 0 2 Let Y 2 X Find P Y 0 Screen Shot 2023 1 0 2 Q Zoom 2 0 3 1 e Share Highlight Rotate

Choose h and k such that the system has a no solution b a unique solution and c many solutions X hx 2 5x 15x k a Select the correct answer below and fill in the answer box es to complete your choice Type an integer or simplified fraction OA The system has no solutions only when k OB The system has no solutions only when k OC The system has no solutions only when h OD The system has no solutions only when h OE The system has no solutions only when h OF The system has no solutions only when h 3 OG The system has no solutions only when h 3 H The system has no solutions only when h and h is any real number and h is any real number and k is any real number and k and k and k and k is any real number and k

1 Which of gay Williams arguments has the key premise that euthanasia has a corrupting influence on health care workers A Argument from Self Interest B Argument from Professional Integrity C Argument from Practical Effects

id the final amount in the following retirement account in which the rate of return on the acc ntribution change over time 12 per month invested at 6 compounded monthly for 5 years then 748 per month invest onthly for 5 years hat is the amount in the account after 10 years Do not round until the final answer Then round to the nearest dollar as needed

According to a certain country s department of education 40 2 of 3 year olds are enrolled in day care What is the probability that a randomly selected 3 year old is enrolled in day care The probability that a randomly selected 3 year old is enrolled in day care is Type an integer or a decimal

STATISOO Business Statistics SP1 2023 Homework Assignment 6 Two Sample Hypothesis Testing Upda Question list Question 2 The accompanying table contains the service ra Click the icon to view the data table a At the 0 01 level of significance is there evid Let p be the mean TV service rating and let p OA H 0 where P OC H P 0 where p P P

Italian Tours offers a daily sightseeing trip the trip for a selection of 9 summer days 41 29 43 33 37 36 41 28 Find the range of the data set

Question 6 of 12 Adults who are being tested for dementia are as they can in one minute Here are the numbers o 24 11 14 16 18 13 12 17 15 23 11 12 13 14

In a recent phone survey people were asked to state their favorite t summarizes the responses of those surveyed Documentary Sports Other Drama News Comedy a Which category was chosen by approximately one third of the

a Identify which of the following are not real numbers 9 27 1 32 5 64 b Describe all the values of b and counting number n for which b is not a real number Explain a Identify which of the following are not real numbers Select all that apply DA 1 DC 32 5 DE 9 b Describe all the values of b and counting number n for which b is not a real number b is not a real number when bis 1 and n is CONE B 27 64 1 4

Homework Assignment 6 Two Sample Hypothesis Testing Upda stion list uestion 1 uestion 2 Question 3 K A recent survey identified the top accounting firms within firms in these two regions included the number of partne Click the icon to view the accounting firms data a At the 0 05 level of significance when pooling the varia Let be the mean number of partners for the highest g OA Ho H H H H H

t back Homework Assignment Testing Upda K

work Demo 1 Lesson 6 n list on 1 on 2 tion 3 K Let n 100 X 80 n 100 ar a At the 0 10 level of significance Determine the null and alternativ OA Ho H OC Ho H Calculate the test statistic ZST

Question 18 1 point Tuity Fruity Beverage Company s operating activities for Purchases Operating expenses Beginning inventory 140 900 80 900 12 400 18 500 300 100 Ending inventory Sales revenue What is the cost of goods available for sale A 140 900

Beginning raw materials inventory Ending raw materials inventory Direct labor Operating expenses Purchases of direct materials Beginning work in process inventory Ending work in process inventory Sales revenue Manufacturing overhead Beginning finished goods inventory Ending finished goods inventory What was cost of goods manufactured A 1150 B 1110 2000 320 230 260 710 360 320 670 5000 790 350 350

estion 13 1 point Period costs are A always recorded as an expen B always considered part of th

2 12 p Frost resistance investigations of a kind of apples gave the following values 8 8 1 in for the ability S to survive after 12 hours frost influence at the values t t of the temperature T in C t in C 10 9 8 7 6 5 4 3 2 1 8 in 13 4 14 8 16 5 17 1 20 0 22 8 28 2 31 7 50 8 97 6 b 5 p Now assume a nonlinear relation of the kind s a Transform z to linearize the approach 8 a b 2 Transform the data and plot the points 28 on a scatter plot Do they approximately lie on a straight line Using a linear regression of the transformed data determine the parameters a and b Plot the estimated regression function along with the original data on a scatter plot How do you evaluate the fit You may use the following sums Et 55 1 385 Es 312 9 Es 15789 63 Ets 1160

7 Sketch the domain of the function f x y z x y z ln x y 2 4

12 p An amazing phenomenon at the Amazon river mouth is Pororoca a gigantic tidal wave that constitutes excellent conditions for surfers That s why always when Pororoca happens mainly in February and March surfers from all over the world come to Northern Brazil to indulge their passion And meteorologists and statisticians also come but with other aims They try to collect data to learn more about this phenomenon The following data set was collected for n 8 contestants during speed trials in windsurfing wind speed ri surf speed yi 35 6 23 2 16 8 38 5 18 9 28 7 33 2 34 8 38 6 18 9 15 8 30 5 15 0 22 5 26 8 28 7 b 3 p Determine the fitted regression line y 3x and plot it on a scatter plot together with the

The following are the annual salaries of

Question 7 of 6 1 point Question Attempt 1 of 1 Two athletes are training for a cycling race Each athlete recorded the The box and whisker plots below sometimes called boxplots summ Use the box and whisker plots to answer the questions 5 10 15 20 25 30 Distance in miles a Which athlete had distances with a larger interquartile range IQR 35

The following are the distances in 8 9 12 14 18 26 27 Notice that the numbers are ordere Give the median lower quartile an a Median 0

The following are distances 31 22 37 32 15 31 Send data to calculator

Consider the following sets of sample data A 31 600 24 100 19 900 36 400 31 B 4 06 3 61 4 19 4 60 3 23 4 70 3 57 2 Step 1 of 2 For each of the above sets of sam

m ach variable determine whether it is best thou Va a The number of your fellow classmates who n Seasonal Affective Disorder b The fuel efficiency in miles per gallon of a

mylab pearson STAT1800 Business Statistics S

The following data are the scores of 18 students on 55 77 82 80 57 94 80 72 56 69 87 63 Send data to calculator Send data to Excel Using the tool provided construct a box and whisk

For the graph shown determine which letter rep

Question 6 of 20 1 point Question Attempt 1 of 1 The pie chart below shows how the annual budget for Equip elow Support Media Engineering Researd

The following list gives the r 11 3 5 10 7 6 4 Send data to calculator Find the modes of this data

For the graph shown determine which letter represents t

4 An intelligence test was recently administered t 37 35 39 30 25 41 25 25 Send data to calculator Send data to Exc a What is the mean of this data set If your ans integer round your answer to one decimal place

For the graph shown determine which letter

ple re 0 Google US Facebook YouTu M Sign 41 7

O Macmillan Learning 200 300 400 500 600 700 800 Math SAT scores are Normally distributed with mean 50

O Macmillan Learning 45 50 55 60 65 70 What percentage of the area under the provided I

four letters c Based on the preceding results what is prefer to get their news online and one adult who prefers a SAT Test In Exercises 15 20 assume that random guesses are made for eight multiple choice questions on an SAT test so that there are n 8 trials each with probability of success correct given by p 0 20 Find the indicated probability for the number of correct answers 15 Find the probability that the number x of correct answers is exactly 7 teas lor r of correct answers is at least 4 507 isht Iabini

O Macmillan Learning Stacked U A couple wants to have three children Assume that the probabilities of a newbo the gender of one child does not influence the gender of another child What is the sample space The future parents are wondering how many boys they might get if they have three space and probabilities of outcomes for the number of boys OS 1st child B or G 2nd child B or G 3rd child B or G OS BBB BBG BGB BGG GBB GBG GGB GGG S 01331

acmillan Learning Jim owns a vehicle Select al Jim s vehicle is a sport u

Macmillan Learning In 2015 over 30 000 Americans died from opioid of related to opiods increased dramatically compared t with the Healthcare Cost and Utilization Project H data include information about inpatient stays emer given patient admitted to a hopsital for an opioid re

0 270 Stacked Rabies is a viral disease of mammals transmitted through the bite of system causing encephalopathy and ultimately death The Florida I documented cases of rabies for all of 2016 Species Probability Raccoon 0 53 Bat 0 22 Fox 0 10 Other X Florida Department of Health Bureau of Epidemiology Animal rabies confirmed cases b

Two antigens antigen A and antigen B determine the four major human blood groups A B AB and O The table below shows the percentage distribution of blood groups for the Caucasian population in the United States American Red Cross 2016 Blood group Antigen Distribution A A 40 Probability B B 11 AB A B 4 Calculate the probability of randomly picking a blood sample that does not contain antigen A that is a blood sample that belongs to either blood group B or blood group O Give your answer as a whole number percentage 0 None 45 American Red Cross Blood Types http www redcrossblood org learn about blood blood types accessed July 27 2016

Q3 Every adult from Q2 saw their money double and they were also given an additiona ten dollars Let T 2X 10 and T represents the amount of money that a randomly selected adult has in his her possession after the increase A What is the mean or expected value of T Interpret this value in context B What is the standard deviation of T Interpret this value in context

Q1 The random variable X is approximately Normally distributed with a mean of 24 and a standard deviation of 5 1 Find the probability that X is at least equal 18 8 Please show work A Draw a picture Normal Curve Put the X values and the Z values on the curve or draw two curves one for X and one for Z B Write the probability statements in terms of X and Z Provide the answer to four decimal places

Independent random samples from approximately normal populations produced the results shown below Assume that the population variances are unequal Complete parts a and b Full data set 45 48 26 30 Sample 1 35 37 A Ho H H 0 H 0 B Ho 1 0 H H H 0 OC Ho H1 H 0 H H H 0 Now find the test statistic 30 53 Round to be decimal places as needed 40 50 64 23 a Do the data present sufficient evidence to conclude that p 207 Use a 0 05 Let u be the mean of population 1 and 2 be the mean of population 2 Select the correct hypotheses below 60 40 Sample 2 51 37 50 46 56 65