Questions

Find each 2 decimal answer for the sample data 5 3 10 2 13 4 17 6 The mean Part 2 of 3 8 25 5 The standard deviation 8 X 0 0 6 8 10 662 0x0 5 6 3 ft mi

A doctor measured serum HDL levels in her patients and found that they were normally distributed with a mean of 69 4 and a standard deviation of 3 9 Find the 2 decimal serum HDL levels that correspond to z 1 6 Part 2 of 2 00 X 19 A doctor measured serum HDL levels in her patients and found that they were normally distributed with a mean of 69 4 and a standard deviation of 3 9 Find the 2 decimal serum HDL levels that correspond to z 2 74 E In P C

Find each for the data 10 16 22 29 33 31 18 26 15 Find Q1 Part 2 of 3 Find Q2 Part 3 of 3 2 16 X X

In a mid size company the distribution of the number of phone calls answered each day by each receptionist is bell shaped and has a mean of 42 and a standard deviation of 12 Using the empirical rule what is the approximate percentage of daily phone calls between 18 and 42 do not put the percent symbol Part 2 of 3 00 X 1 9 What is the percent between 30 and 54 do not put the percent symbol

What is the name of a financial product offered by insurance companies to which a person makes contributions and from which the person immediately or later begins receiving payments A Bond B Money market account C Annuity D CD ladder

Use the table of values to find each 2 d cimal answer 21 74 84 60 23 45 88 29 36 27 60 37 58 41 77 57 31 27 63 76 88 64 92 16 Find the mean Part 2 of 3 010 S If this is sample data give the sample standard deviation

Part 1 of 3 The population of animals in a zoo was checked each week and the values are blew 121 144 133 155 111 144 153 150 What is the 1 decimal mean value of the population Part 2 of 3 2 16 X What is the 1 decimal population standard deviation of the data 9 10 5 X

What is the percent between 18 and 78 do not put the percent symbol 0 00

1 A loader has a full bucket capacity of 10 yd3 and the average time required to place one bucketload of soil into a truck is 1 min The loader is supported by four trucks with a volume of 50 yd3 each and a cycle time of 12 min plus the time to load the truck The ideal productivity yd3 hr of this system is most nearly

The cost of 500 000 worth of 30 year term life insurance for Rico is 66 60 per month If Rico s employer covers 90 of this cost how much is deducted from Rico s gross income per year for life insurance A 799 20 B 79 92 C 719 28 D 59 94

dy t dt Given the system 2 2cos 2t is O 4 3y t 10x t the steady state response of the system O 1 The system does not have a steady state response 2 y t 10cos 0 5t tan 4 O 3 TE y t 20cos 2t 4 tan tan TT y t 4cos 2t 05 y t 20cos 2t 1 2 tan

Hint s Check My Work Consider a sample with data values of 27 24 23 17 30 33 28 and 24 Compute the range interquartile range variance and standard deviation Round to 2 decimals if necessary Range Interquartile range Variance Standard deviation 16 5 00 X X

Southern Environmental Consulting SEC Inc designs plans and specifications for asbestos abatement removal projects in public private and government buildings Currently SEC must conduct an air test before allowing the occupancy of a building after the asbestos has been removed SEC subcontracts air test samples to a laboratory for analysis by transmission electron microscopy TEM To offset the cost of TEM analysis SEC charges its clients 125 more than the subcontractor s fee The only expenses in this system are the costs of shipping the air test samples to th subcontractor and the labor involved in shipping the samples With the growth of the business SEC must consider eith continuing to subcontract the TEM analysis to outside companies or developing its own TEM laboratory Because of the passage of the Asbestos Hazard Emergency Response Act AHERA by the U S Congress SEC expects about 1 000 air sample tests per year over eight years The firm s MARR is known to be 7 Click the icon to view the description of alternatives Click the icon to view the interest factors for discrete compounding when MARR 7 per year a Determine the cost of an air sample test by the TEM laboratory in house

Washington Air Company is considering the purchase of a helicopter for connecting services between the company s base airport and the new intercounty airport being built about 30 miles away It is believed that the chopper will be needed only for six years until the Rapid Transit Connection is phased in The estimates on two types of helicopters under consideration the Whirl 2B and the ROT 8 are given in the table below Assuming that the Whirl 2B will be available in the future with identical costs what is the annual cost advantage of selecting the ROT 8 Use an interest rate of 8 Click the icon to view the estimates on two types of helicopters under consideration Click the icon to view the interest factors for discrete compounding when i 8 per year

The purpose of the reaction buffer Tris HC1 KC1 and MgCl in the PCR mixture is to O a Provide the DNA template for Taq polymerase to bind to Ob Provide a stable environment pH ions cofactors for Taq polymerase O C Allow conductivity of DNA to move from the cathode to the anode d It includes the dNTPS

An amplicon is a PCR product and the DNA to be amplified is the template True False Question 4 1 point Listen Positive and negative controls are necessary in experiments because they O a provide a standard for the outcomes of the experimental sample being tested Ob add additional samples to the experiment O c make the experiment easier to complete

DO True False

Taq polymerase is extracted from O a Saccharomyces cerevisiae O b Escherichia coli Oc Thermus aquaticus d Bacillus cereus who lives in hot springs

An amplicon is a PCR product and the DNA to be amplified is the template O True False

In sequential order which are the three steps of PCR O a Denature DNA Extend DNA Anneal Primers O b Anneal Primers Denature DNA Extend DNA O c Denature DNA Anneal Primers Extend DNA d Extend DNA Anneal Primers Denature DNA

If y represents total earnings in dollars and x represents hours worked ther the equation that corresponds to the earnings of someone who makes 10 25 an hour is OA x 10 25y OB y 10 25 X OC y 10 25 x D y 10 25x

You are considering purchasing a dump truck The truck will cost 74 000 and have operating and maintenance cos that start at 15 000 the first year and increases by 1 000 per year Assume that the salvage value at the end of fiv years is 17 000 and interest rate is 15 What is the equivalent annual cost of owning and operating the truck for five years Click the icon to view the interest factors for discrete compounding when i 15 per year The equivalent annual cost of owning and operating the truck is Round to the nearest dollar

Agnes wants to buy a gallon of iced tea If a 1 gallon jug costs 3 05 and a pint costs 0 45 how much money would Agnes save by buying the 1 gallor jug instead of multiple pints OA 2 60 B 0 35 OC 1 25 OD 0 55

What is the median of the following string of values 51 22 17 28 98 4 24 83 9 76 OA 28 OB 26 OC 24 D 22

A tour guide who gets paid 95 for each tour given is an example of what type of pay OA Vacation pay B Hourly pay O C Salary D Piece rate

Five observations taken for two variables follow 80 70 60 50 40 30 20 10 0 x 0 Y 4 6 11 a Develop a scatter diagram with x on the horizontal axis y 5 3 16 50 60 40 60 30 10 15 c Compute the sample covariance 20 X y 80 70 60 50 40 30 20 10 0 DO 0 5 10 b What does the scatter diagram developed in part a indicate about the relationship between the two variables The scatter diagram indicates that there is Select relationship between the two variables 15 O There is a strong negative linear relationship between the two variables There is no relationship between the two variables Based on the sample correlation coefficient what can be said about the relationship between the two variables There is a strong positive linear relationship between the two variables 20 X DO y 80 70 60 50 40 30 20 10 0 0 5 10 Based on the sample covariance what can be said about the relationship between the two variables There is a strong positive linear relationship between the two variables O There is a strong negative linear relationship between the two variables O There is no relationship between the two variables O There is a positive linear relationship between the two variables but the strength of this relationship cannot be determined based on the sample covariance There is a negative linear relationship between the two variables but the strength of this relationship cannot be determined based on the sample covariance d Compute the sample correlation coefficient Round your answer to three decimal places 15 X 20 DO 80 70 60 50 40 30 20 10 0 0 MY NOTES 5 ASK YOUR 10 15

What is the y intercept of the line passing through the point 4 5 with a slope of 1 OA 41 10 B 4 O D O O c 49 49 9

The creator of a new online multiplayer survival game has been tracking the monthly downloads of the newest game The following table shows the monthly downloads in thousands for each month of the current and previous year Round your answers to the nearest whole number Downloads thousands Month Downloads Month previous year thousands current year February March April mean May June July August September October mean median mode November December 33 34 median mode 34 32 32 35 34 37 37 35 33 January February March April May June July August September October 37 37 37 38 37 36 37 35 a Compute the mean median and mode for number of downloads in the previous year 34 x 34 x 34 x 33 32 b Compute the mean median and mode for number of downloads in the current year c Compute the first and third quartiles for downloads in the previous year 81 Q3 d Compute the first and third quartiles for downloads in the current year Q 23

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A data systems specialist makes 27 an hour for the first 40 hours she works during a week and 35 an hour for each hour over 40 hours Which piecewise equation models her total weekly pay yin dollars as it relates to the number of hours x that she has worked during the week O A y B y OC y OD y 27x 135 x 40 27x 135x 1080 0 x 40 X 40 27x 35x 0 x 40 X 40 0 x 40 27x 35 x 40 1080 x 40 0 x 40 x 40

A fortune teller gets paid 60 for each fortune he tells and his goal is to ea 2280 telling fortunes this month If he has already told 2 fortunes this month how many more fortunes must he tell in order to reach his goal A 36 OB 38 OC 40 O D 30

Given functions Find 3x g x x 6 h x h x a hog x b State the domain in interval notation x

vis accepted a job as a billing assistant after being offered a 900 signing bonus If he makes 19 an hour which equation models Elvis total pay y in dollars as it relates to the number of hours x that he has worked OA y 19x 900 OB y 19x 900 OC y 900x 19 OD y 900x 19

A receptionist earned 443 a week last year What was her yearly salary OA 26 322 OB 23 036 C 23 193 OD 25 279

Bernardo heard that as a general rule he should spend no more than one week s pay on rent If Bernardo s pay is 34 800 per year what is the maximum amount per month that he should spend on rent OA 2900 OB 2030 OC 1044 OD 669

5 4 M 2 3 2 3 The minimum degree of the polynomial is 2 The minimum degree of the polynomial is 3 The minimum degree of the polynomial is 4 The minimum degree of the polynomial is 5 The minimum degree of the polynomial is 6 The leading coefficient is positive The leading coefficient is negative Based on the end behavior the polynomial is odd Based on the end behavior the polynomial is even

Determine the end behavior of f x 5x x 4 x 2 5 x 3 2 Ox y x y E

A fireworks mortar is launched straight upward from a pool deck platform 10 m off the ground at an initial velocity of 62 m sec The height of the mortar can be modeled by h t 4 9t 2 62t 10 where h t is the height in meters and t is the time in seconds after launch What is the maximum height Round to the nearest meter do not include units in your answer

Factor completely using synthetic division 3x 5x 4x 4 given that 2 is a root x intercept value Write the answer in linear factor form You must show work to receive credit

A salesperson makes a base salary of 1100 per month Once he reaches 38 000 in total sales he earns an additional 6 commission on the amount of sales over 38 000 Write a piecewise defined function to model the salesperson s total monthly salary in as a function of the amount in sales x

The monthly profit for a company that makes picture frames depends on the price per frame The company determines that the profit is approximated by P x 50x 80 000x 2500 where x is the price per frame and P x is the monthly profit based on that price Find the price that generates the maximum profit

weights in grams of pre 1964 quarters Weight g 6 000 6 049 6 050 6 099 6 100 6 149 6 150 6 199 6 200 6 249 6 250 6 299 6 300 6 349 6 350 6 399 Frequency 3 482044 12 10 Use the frequency distribution to construct a histogram Does the histogram appear to depict data that have a normal distribution Why or why not B O C Frequency Frequency 65 15 10 5 04 6 6 6 1 62 Weight grams 6 1 6 2 Weight grams 6 3 6 3 D 64 6 Does the histogram appear to depict data that have a normal distribution OA The histogram appears to depict a normal distribution The frequencies generally increase to a maximum and then decrease and the histogram is roughly symmetric OB The histogram appears to depict a normal distribution The frequencies generally decrease to a minimum and then increase

The to the right represents the weights in pounds of members of a certain high school debate team What is the class width What are the approximate lower and upper class limits of the first class What is the class width The class width is Simplify your answer Frequency 04 105 115 125 135 145 155 165 175 Weight lbs G

The last digit of the heights of 60 statistics students were obtained as part of an experiment conducted for a class Use the following frequency distribution to construct a histogram What can be concluded from the distribution of the digits Specifically do the heights appear to be reported or actually measured Digit Frequency 0 13 1 2 3 4 58679 3 5 4 4 15 5 4 3 4 OB C OD 16 16 0 H 0123456789 0123456789 0123456789 Are the data reported or measured OA The data appears to be measure The heights occur with roughly the same frequency OB The data appears to be measured Certain heights occur a disproportionate number of times OC The data appears to be reported T heights occur with roughly the sam frequency D The data appears to be reported Certain heights occur a disproportionate number of times

K Which of the accompanying normal quantile plots appear to represent data from a population having a normal distribution Explain Click the icon to view the normal quantile plots a Does this normal quantile plot appear to represent data from a population having a normal distribution OA The distribution is not a normal distribution The normal quantile plot has points that are not close to a straight line pattern OB The distribution is not a normal distribution The normal quantile plot has a systematic pattern that is not that of a straight line OC The distribution is a normal distribution The pattern of the points is reasonably close to a straight line and the points do not show some other systematic pattern OD The distribution is a normal distribution The normal quantile plot has a systematic pattern that is not that of a straight line

The histogram to the right repr ents the weights in pounds of members of a certain high school programming team How many team members are included in the histogram The histogram represents programming team members 4 2 0 110 130 150 170 190 210 230

F The table below shows the frequency distribution of the rainfall on 52 consecutive Sundays in a certain city Use the frequency distribution to construct a histogram Do the data appear to have a distribution that is approximately normal Class 0 0 19 0 20 0 39 0 40 0 59 0 60 0 79 0 80 0 99 1 00 1 19 1 20 1 39 Frequency 26 6277ad 13 3 Choose the correct histogram below A B O C 30 20 10 0 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 30 20 10 10 0 0 02 04 06 08 10 12 14 30 20 10 0 0 0 02 04 06 08 10 12 14 C Q

The accompanying data are 45 commute times to work in minutes for workers of age 16 or older in Chicago Construct a frequency distribution Use a class width of 15 minutes and begin with a lower class limit of 0 minutes the data amounts appear to have a normal distribution Examine the data and identify anything appearing to be unique Click the icon to view the commute times Construct the frequency distribution Commute Time minutes 0 Frequency

Problem 5 Use the method of cylindrical shells to find the volume when the region bounded above by x y and x 2 y and below by the x axis and rotated around the x axis

Hamada invests 20 000 at 8 annual interest leaving the money invested without withdrawing any of the interest for 8 years At the end of the E years Hamada withdraws the accumulated amount of money the amount of interest assuming the investment earns simple interest is O a 37 018 60 O b 12 800 c 32 800 O d 7 200 Clear my choice