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2. Pro football players earn huge salaries, but they have short professional careers. One sports magazine reported that the average career length is 4.3 years. A random sample of 40 retired players showed a sample mean career length of 5.2 years. We will accept the magazine's value for the population standard deviation = 2.3 years. Based on these data, is the population mean career length higher than the value reported in the magazine? Use a 5% level of significance.

2. Pro football players earn huge salaries, but they have short professional careers. One sports magazine reported that the average career length is 4.3 years. A random sample of 40 retired players showed a sample mean career length of 5.2 years. We will accept the magazine's value for the population standard deviation = 2.3 years. Based on these data, is the population mean career length higher than the value reported in the magazine? Use a 5% level of significance.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Launch Meeting - Zoom cd.edu/courses/191939/quizzes/1457221/take torials Resources @2 f2 W X + Choose TWO of the following five problems and write out a COMPLETE hypothesis test for each one. Include null and alternative hypotheses, level of significance, distribution to be used with a sketch showing p-areas or critical regions), the critical value and test statistic (if you are using that method) and/or the p-value (if you are using that method). JUST TWO OF THEM! 1. A CEO wants to know whether management style affects the number of sick days taken by employees. Three departments were studied, all having the same number of employees but different management styles. For a random sample of three months, the numbers of sick days were as follows: Employee Sick Days for Three Management Styles Top-down management Quality control teams Informal employee input 19 15 12 28 15 14 18 What would you tell the CEO? Make sure to state your null and alternate hypotheses, sketch the appropriate distribution and the critical region, showing the critical value and the value of the test statistic, and explain your same population standard deviations.) conclusion. Use a 5% level of significance. (Assume that the distributions are normal and have approximately the 2. Pro football players earn huge salaries, but they have short professional careers. One sports magazine reported that the average career length is 4.3 years. A random sample of 40 retired players showed a sample mean career length of 5.2 years. We will accept the magazine's value for the population standard deviation = 2.3 years. Based on these data, is the population mean career length higher than the value reported in the magazine? Use a 5% level of significance. 0 M C a OF I hp f4 f7 f10 f11 9 34 f3 # 3 E $ 4 P f5 16 21 % 5 f6 T ^ 6 7 f8 fg 8 f12
Transcribed Image Text:Launch Meeting - Zoom cd.edu/courses/191939/quizzes/1457221/take torials Resources @2 f2 W X + Choose TWO of the following five problems and write out a COMPLETE hypothesis test for each one. Include null and alternative hypotheses, level of significance, distribution to be used with a sketch showing p-areas or critical regions), the critical value and test statistic (if you are using that method) and/or the p-value (if you are using that method). JUST TWO OF THEM! 1. A CEO wants to know whether management style affects the number of sick days taken by employees. Three departments were studied, all having the same number of employees but different management styles. For a random sample of three months, the numbers of sick days were as follows: Employee Sick Days for Three Management Styles Top-down management Quality control teams Informal employee input 19 15 12 28 15 14 18 What would you tell the CEO? Make sure to state your null and alternate hypotheses, sketch the appropriate distribution and the critical region, showing the critical value and the value of the test statistic, and explain your same population standard deviations.) conclusion. Use a 5% level of significance. (Assume that the distributions are normal and have approximately the 2. Pro football players earn huge salaries, but they have short professional careers. One sports magazine reported that the average career length is 4.3 years. A random sample of 40 retired players showed a sample mean career length of 5.2 years. We will accept the magazine's value for the population standard deviation = 2.3 years. Based on these data, is the population mean career length higher than the value reported in the magazine? Use a 5% level of significance. 0 M C a OF I hp f4 f7 f10 f11 9 34 f3 # 3 E $ 4 P f5 16 21 % 5 f6 T ^ 6 7 f8 fg 8 f12
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