Mathematics with Applications, Books a la Carte, and MyLab Math with Pearson eText - Title-Specific Access Card Package (12th Edition)
12th Edition
ISBN: 9780134862651
Author: Lial
Publisher: PEARSON
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Chapter 10.3, Problem 30E
To determine
To calculate: The standard deviation from the given table representing the number of hours worked in a week for 30 workers selected at random from 2016.
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A marketing professor has surveyed the students at her university to better understand attitudes towards PPT usage for higher education. To be able to make inferences to the entire student body, the sample drawn needs to represent the university’s student population on all key characteristics. The table below shows the five key student demographic variables. The professor found the breakdown of the overall student body in the university’s fact book posted online.
A non-parametric chi-square test was used to test the sample demographics against the population percentages shown in the table above. Review the output for the five chi-square tests on the following pages and answer the five questions:
Based on the chi-square test, which sample variables adequately represent the university’s student population and which ones do not? Support your answer by providing the p-value of the chi-square test and explaining what it means.
Using the results from Question 1, make recommendation for…
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Chapter 10 Solutions
Mathematics with Applications, Books a la Carte, and MyLab Math with Pearson eText - Title-Specific Access Card Package (12th Edition)
Ch. 10.1 - Checkpoint 1 A restaurant trade group commissioned...Ch. 10.1 - Checkpoint 2
Make a histogram and a frequency...Ch. 10.1 - Checkpoint 3
Make a stem-and-leaf plot for the...Ch. 10.1 - Checkpoint 4
List the original data for the...Ch. 10.1 - Checkpoint 5
Characterize the shape of the...Ch. 10.1 - SP 500 Stocks The data for Exercises 1 -4 consist...Ch. 10.1 - SP 500 Stocks The data for Exercises 1 -4 consist...Ch. 10.1 - SP 500 Stocks The data for Exercises 1 -4 consist...Ch. 10.1 - SP 500 Stocks The data for Exercises 1 -4 consist...Ch. 10.1 - The data for Exercises 5-10 consist of random...
Ch. 10.1 - The data for Exercises 5-10 consist of random...Ch. 10.1 - The data for Exercises 5-10 consist of random...Ch. 10.1 - The data for Exercises 5-10 consist of random...Ch. 10.1 - The data for Exercises 5-10 consist of random...Ch. 10.1 - The data for Exercises 5-10 consist of random...Ch. 10.1 - For Exercises 11-20, construct a stem-and-leaf...Ch. 10.1 - For Exercises 11-20, construct a stem-and-leaf...Ch. 10.1 - For Exercises 11-20, construct a stem-and-leaf...Ch. 10.1 - Prob. 14ECh. 10.1 - For Exercises 11-20, construct a stem-and-leaf...Ch. 10.1 - For Exercises 11-20, construct a stem-and-leaf...Ch. 10.1 - Prob. 17ECh. 10.1 - Prob. 18ECh. 10.1 - For Exercises 11-20, construct a stem-and-leaf...Ch. 10.1 - For Exercises 11-20, construct a stem-and-leaf...Ch. 10.1 - Describe the shape of each of the given...Ch. 10.1 - Describe the shape of each of the given...Ch. 10.1 - Describe the shape of each of the given...Ch. 10.1 - Describe the shape of each of the given...Ch. 10.1 - Student Loan Defaults The following histogram...Ch. 10.1 - Stocks The following histogram shows the stock...Ch. 10.1 - Cat Ownership The stem-and-leaf plot below...Ch. 10.1 - Personal Bankruptcies The stem-and-leaf plot below...Ch. 10.1 - 29. Test Scores The grade distribution for scores...Ch. 10.1 - 30. Test Scores The grade distribution for scores...Ch. 10.2 - Checkpoint 1
Find the mean dollar amount of the...Ch. 10.2 - Checkpoint 2
Find for the following frequency...Ch. 10.2 - Checkpoint 3
Find the mean of the following...Ch. 10.2 - Checkpoint 4
Find the mean for the college tuition...Ch. 10.2 - Checkpoint 5
Find the median for the given heights...Ch. 10.2 - Checkpoint 6
Find the mode for each of the given...Ch. 10.2 - Checkpoint 7
Following is a list of the number of...Ch. 10.2 - Prob. 8CPCh. 10.2 - Prob. 1ECh. 10.2 - Prob. 2ECh. 10.2 - Prob. 3ECh. 10.2 - Prob. 4ECh. 10.2 - Prob. 5ECh. 10.2 - Prob. 6ECh. 10.2 - Prob. 7ECh. 10.2 - Prob. 8ECh. 10.2 - Prob. 9ECh. 10.2 - Prob. 10ECh. 10.2 - Prob. 11ECh. 10.2 - Prob. 12ECh. 10.2 - Prob. 13ECh. 10.2 - Prob. 14ECh. 10.2 - Find the mode or modes for each of the given lists...Ch. 10.2 - Find the mode or modes for each of the given lists...Ch. 10.2 - Find the mode or modes for each of the given lists...Ch. 10.2 - Find the mode or modes for each of the given lists...Ch. 10.2 - Find the mode or modes for each of the given lists...Ch. 10.2 - 20. When is the median the most appropriate...Ch. 10.2 - 21. When would the mode be an appropriate measure...Ch. 10.2 - Pet Ownership For Exercises 22 and 23, the...Ch. 10.2 - Pet Ownership For Exercises 22 and 23, the...Ch. 10.2 - 24. To predict the outcome of the next...Ch. 10.2 - Work each problem. (See Example 6.) MLB Payrolls...Ch. 10.2 - Work each problem. (See Example 6.) NFL Team...Ch. 10.2 - Work each problem. (See Example 6.)
27. Business...Ch. 10.2 - Work each problem. (See Example 6.) Sirius XM...Ch. 10.2 - Work each problem. (See Example 6.) Dr Pepper and...Ch. 10.2 - Natural Science The table gives the average...Ch. 10.2 - Natural Science The table gives the average...Ch. 10.2 - For Exercises 32-33 determine the shape of the...Ch. 10.2 - For Exercises 32-33 determine the shape of the...Ch. 10.2 - Prob. 34ECh. 10.2 - Prob. 35ECh. 10.2 - For Exercises 36-38, calculate the weighted...Ch. 10.2 - For Exercises 36-38, calculate the weighted...Ch. 10.2 - For Exercises 36-38, calculate the weighted...Ch. 10.2 - Prob. 39ECh. 10.2 - For Exercises 36-38, calculate the weighted...Ch. 10.3 - Checkpoint 1
Find the range for this sample of the...Ch. 10.3 - Checkpoint 2
Find the deviations from the mean for...Ch. 10.3 - Checkpoint 3
Find the standard deviation for a...Ch. 10.3 - Prob. 4CPCh. 10.3 - Prob. 1ECh. 10.3 - Prob. 2ECh. 10.3 - Prob. 3ECh. 10.3 - Prob. 4ECh. 10.3 - Prob. 5ECh. 10.3 - Prob. 6ECh. 10.3 - Prob. 7ECh. 10.3 - Finance Use the following table for Exercises...Ch. 10.3 - Finance Use the following table for Exercises...Ch. 10.3 - Prob. 10ECh. 10.3 - Education Find the standard deviation for the...Ch. 10.3 - Prob. 12ECh. 10.3 - Prob. 13ECh. 10.3 - Prob. 14ECh. 10.3 - Prob. 15ECh. 10.3 - Prob. 16ECh. 10.3 - Prob. 17ECh. 10.3 - Prob. 18ECh. 10.3 - Prob. 19ECh. 10.3 - Prob. 20ECh. 10.3 - Prob. 21ECh. 10.3 - Prob. 22ECh. 10.3 - Prob. 23ECh. 10.3 - Movie Studios' Revenue For Exercises 23-28, use...Ch. 10.3 - Prob. 25ECh. 10.3 - Prob. 26ECh. 10.3 - Prob. 27ECh. 10.3 - Prob. 28ECh. 10.3 - Prob. 29ECh. 10.3 - Prob. 30ECh. 10.3 - Prob. 34ECh. 10.3 - Prob. 31ECh. 10.3 - Prob. 32ECh. 10.3 - Prob. 33ECh. 10.3 - IBM and Microsoft Revenue The following table...Ch. 10.3 - Prob. 36ECh. 10.3 - Prob. 37ECh. 10.3 - Prob. 38ECh. 10.3 - IBM and Microsoft Revenue The following table...Ch. 10.3 - Prob. 40ECh. 10.3 - Prob. 41ECh. 10.3 - Prob. 42ECh. 10.3 - Prob. 43ECh. 10.3 - Prob. 44ECh. 10.3 - Prob. 45ECh. 10.3 - Prob. 46ECh. 10.3 - Prob. 47ECh. 10.3 - Prob. 48ECh. 10.4 - Prob. 1CPCh. 10.4 - Prob. 2CPCh. 10.4 - Prob. 3CPCh. 10.4 - Prob. 4CPCh. 10.4 - Prob. 5CPCh. 10.4 - Prob. 6CPCh. 10.4 - Prob. 7CPCh. 10.4 - 1. The peak in a normal curve occurs directly...Ch. 10.4 - Prob. 2ECh. 10.4 - Prob. 3ECh. 10.4 - Prob. 4ECh. 10.4 - Prob. 5ECh. 10.4 - Prob. 6ECh. 10.4 - Prob. 7ECh. 10.4 - Prob. 8ECh. 10.4 - Find the percentage of the total area under the...Ch. 10.4 - Prob. 10ECh. 10.4 - Prob. 11ECh. 10.4 - Prob. 12ECh. 10.4 - Prob. 13ECh. 10.4 - Prob. 14ECh. 10.4 - Prob. 15ECh. 10.4 - Prob. 16ECh. 10.4 - Prob. 17ECh. 10.4 - Prob. 18ECh. 10.4 - Prob. 19ECh. 10.4 - 20. Using Chebyshev’s theorem and the normal...Ch. 10.4 - Prob. 21ECh. 10.4 - Prob. 22ECh. 10.4 - Prob. 23ECh. 10.4 - Prob. 24ECh. 10.4 - Prob. 25ECh. 10.4 - Prob. 26ECh. 10.4 - Prob. 27ECh. 10.4 - Prob. 28ECh. 10.4 - Prob. 29ECh. 10.4 - Prob. 30ECh. 10.4 - Prob. 31ECh. 10.4 - Prob. 32ECh. 10.4 - Prob. 33ECh. 10.4 - Prob. 34ECh. 10.4 - Prob. 35ECh. 10.4 - Prob. 36ECh. 10.4 - Prob. 37ECh. 10.4 - Prob. 38ECh. 10.4 - Prob. 39ECh. 10.4 - Prob. 40ECh. 10.4 - Prob. 41ECh. 10.4 - Prob. 42ECh. 10.4 - Prob. 43ECh. 10.4 - Prob. 44ECh. 10.4 - Prob. 45ECh. 10.4 - Prob. 46ECh. 10.4 - Prob. 47ECh. 10.4 - Prob. 48ECh. 10.4 - Prob. 49ECh. 10.4 - Education The mean performance score of a large...Ch. 10.4 - Prob. 51ECh. 10.4 - Prob. 52ECh. 10.4 - Job Satisfaction According to a 2016 study...Ch. 10.4 - Prob. 54ECh. 10.4 - Prob. 55ECh. 10.4 - Prob. 56ECh. 10.4 - Prob. 57ECh. 10.4 - Prob. 58ECh. 10.4 - Student Loan Debt According to a report from the...Ch. 10.4 - Prob. 60ECh. 10.4 - Prob. 61ECh. 10.4 - Prob. 62ECh. 10 - NASDAQ 100 Stocks For Exercises 1-10, the data...Ch. 10 - Prob. 2RECh. 10 - Prob. 3RECh. 10 - Prob. 4RECh. 10 - Prob. 5RECh. 10 - Prob. 6RECh. 10 - NASDAQ 100 Stocks For Exercises 1-10, the data...Ch. 10 - Prob. 8RECh. 10 - Prob. 9RECh. 10 - Prob. 10RECh. 10 - Prob. 11RECh. 10 - Prob. 12RECh. 10 - Prob. 13RECh. 10 - Prob. 14RECh. 10 - Prob. 15RECh. 10 - Prob. 16RECh. 10 - Prob. 17RECh. 10 - Prob. 18RECh. 10 - Prob. 19RECh. 10 - Prob. 20RECh. 10 - Prob. 21RECh. 10 - Prob. 22RECh. 10 - Prob. 23RECh. 10 - Prob. 24RECh. 10 - Find the standard deviation for each of the given...Ch. 10 - Prob. 26RECh. 10 - Prob. 27RECh. 10 - Prob. 28RECh. 10 - Prob. 29RECh. 10 - Prob. 30RECh. 10 - Prob. 31RECh. 10 - Prob. 32RECh. 10 - Prob. 33RECh. 10 - Prob. 34RECh. 10 - Prob. 35RECh. 10 - Prob. 36RECh. 10 - Arm Circumference Data from a recent National...Ch. 10 - Prob. 38RECh. 10 - Prob. 39RECh. 10 - Prob. 40RECh. 10 - Prob. 41RECh. 10 - Prob. 42RECh. 10 - Prob. 43RECh. 10 - Prob. 44RECh. 10 - Prob. 45RECh. 10 - Prob. 46RECh. 10 - Prob. 47RECh. 10 - College or University Education A recent...Ch. 10 - College or University Education A recent...Ch. 10 - Prob. 50RECh. 10 - Prob. 51RECh. 10 - Prob. 52RECh. 10 - Prob. 53RECh. 10 - Prob. 54RECh. 10 - Prob. 1CECh. 10 - Prob. 2CECh. 10 - Prob. 3CECh. 10 - Prob. 4CECh. 10 - Prob. 5CECh. 10 - Prob. 6CECh. 10 - Prob. 7CECh. 10 - Prob. 8CECh. 10 - Prob. 9CECh. 10 - Prob. 10CE
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- A marketing professor has surveyed the students at her university to better understand attitudes towards PPT usage for higher education. To be able to make inferences to the entire student body, the sample drawn needs to represent the university’s student population on all key characteristics. The table below shows the five key student demographic variables. The professor found the breakdown of the overall student body in the university’s fact book posted online. A non-parametric chi-square test was used to test the sample demographics against the population percentages shown in the table above. Review the output for the five chi-square tests on the following pages and answer the five questions: Based on the chi-square test, which sample variables adequately represent the university’s student population and which ones do not? Support your answer by providing the p-value of the chi-square test and explaining what it means. Using the results from Question 1, make recommendation for…arrow_forwardQuestion 10 6 5 4 3 2 -π/4 π/4 π/2 -1 -2 -3- -4 -5- -6+ For the graph above, find the function of the form f(x)=a tan(bx)+c where a=-1 or +1 only f(x) = Question Help: Videoarrow_forwardMODELING REAL LIFE Your checking account has a constant balance of $500. Let the function $m$ represent the balance of your savings account after $t$ years. The table shows the total balance of the accounts over time. Year, $t$ Total balance 0 1 2 3 4 5 $2500 $2540 $2580.80 $2622.42 $2664.86 $2708.16 a. Write a function $B$ that represents the total balance after $t$ years. Round values to the nearest hundredth, if necessary. $B\left(t\right)=$ Question 2 b. Find $B\left(8\right)$ . About $ a Question 3 Interpret $B\left(8\right)$ . b represents the total balance checking and saving accounts after 8 years the balance would be 16 / 10000 Word Limit16 words written of 10000 allowed Question 4 c. Compare the savings account to the account, You deposit $9000 in a savings account that earns 3.6% annual interest compounded monthly. A = 11998.70 SINCE 9000 is the principal ( 1+0.036/12)12 times 8 gives me aproxtimately 1997 14 / 10000 Word Limit14 words written of 10000 allowed Skip to…arrow_forward
- Listen MODELING REAL LIFE Your checking account has a constant balance of $500. Let the function m represent the balance of your savings account after t years. The table shows the total balance of the accounts over time. Year, t Total balance 0 $2500 1 $2540 2 $2580.80 3 $2622.42 4 $2664.86 5 $2708.16 a. Write a function B that represents the total balance after t years. Round values to the nearest hundredth, if necessary. B(t) = 500 + 2000(1.02)* b. Find B(8). About $2843.32 Interpret B(8). B I U E T² T₂ c. Compare the savings account to the account, You deposit $9000 in a savings account that earns 3.6% annual interest compounded monthly. B I U E E T² T₂ A = 11998.70 SINCE 9000 is the principal (1+0.036/12)12 times 8 gives me aproxtimately 1997arrow_forward14. Show that if a, b, and c are integers such that (a, b) = 1 and c | (a+b), then (c, a) = (c, b) = 1.arrow_forwardA retail chain is interested in determining whether a digital video point-of-purchase (POP) display would stimulate higher sales for a brand advertised compared to the standard cardboard point-of-purchase display. To test this, a one-shot static group design experiment was conducted over a four-week period in 100 different stores. Fifty stores were randomly assigned to the control treatment (standard display) and the other 50 stores were randomly assigned to the experimental treatment (digital display). Compare the sales of the control group (standard POP) to the experimental group (digital POP). What were the average sales for the standard POP display (control group)? What were the sales for the digital display (experimental group)? What is the (mean) difference in sales between the experimental group and control group? List the null hypothesis being tested. Do you reject or retain the null hypothesis based on the results of the independent t-test? Was the difference between the…arrow_forward
- Using fixed point iteration and Newton Raphson methods to solve the following function: f(x) = e−0.5x(4-x)-2. Take xo-2 and n=5.arrow_forwardUse the information to find and compare Δy and dy. (Round your answers to four decimal places.) y = x4 + 7 x = −3 Δx = dx = 0.01 Δy = dy =arrow_forwardWhat were the average sales for the four weeks prior to the experiment? What were the sales during the four weeks when the stores used the digital display? What is the mean difference in sales between the experimental and regular POP time periods? State the null hypothesis being tested by the paired sample t-test. Do you reject or retain the null hypothesis? At a 95% significance level, was the difference significant? Explain why or why not using the results from the paired sample t-test. Should the manager of the retail chain install new digital displays in each store? Justify your answer.arrow_forward
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