4. The CEO of a large company wants to test the claim that more than 20% of the company'semployees are willing to take a pay cut to work less hours in order to have more time for personaland leisure activities. She selects a random sample of 500 employees and 80 of them said they arewilling to take a pay cut to work less hours.A. At a = 0.10, is there enough evidence to support the claim?B. If the CEO wants to repeat the study to estimate the true proportion of employees who wouldaccept a pay cut to work less to within 2% and with 95% confidence, how many employees shouldshe randomly select?

The null and alternative hypothesesare: Ho: p = 0.20Ho:p=0.20 Ha: p > 0.20Ha:p>0.20 This…

4. The CEO of a large company wants to test the claim that more than 20% of the company's employees are willing to take a pay cut to work less hours in order to have more time for pers and leisure activities. She selects a random sample of 500 employees and 80 of them said they willing to take a pay cut to work less hours. A. At a = 0.10, is there enough evidence to support the claim? B. If the CEO wants to repeat the study to estimate the true proportion of employees who would accept a pay cut to work less to within 2% and with 95% confidence, how many employees sh noloot?

4. The CEO of a large company wants to test the claim that more than 20% of the company's employees are willing to take a pay cut to work less hours in order to have more time for pers and leisure activities. She selects a random sample of 500 employees and 80 of them said they willing to take a pay cut to work less hours. A. At a = 0.10, is there enough evidence to support the claim? B. If the CEO wants to repeat the study to estimate the true proportion of employees who would accept a pay cut to work less to within 2% and with 95% confidence, how many employees sh noloot?

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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A auto shop wants to examine the proportion of customers that have to return after an appointment. Last year, an examination of 264 customers found that 30.1% had to return after an appointment. You instituted some changes at the auto shop this year, and found from a sample of 326 customers that 22.4% had to return after an appointment. You want to conduct an analysis to determine if there has been an increase in the proportion of customers that need to return after an appointment since the past year, with a = 0. 10. Using this information, what is the critical value of your analysis? Round your final answer to two decimal places. 2.11 1.96 2.33 1.28 1.64
5.
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An auto shop wants to examine the proportion of customers that have to return after an appointment. Last year, an examination of 375 customers found that 26.9% had to return after an appointment. You instituted some changes at the auto shop this year, and found from a sample of 430 customers that 33.9% had to return after an appointment. You want to conduct an analysis to determine if there has been an increase in the proportion of customers that need to return after an appointment since the past year, with a significance level of 1%. Using this information, what is the test statistic of your analysis? For the purposes of this analysis, use - Pcurrent year Plast Round any intermediate numbers to four decimal year. places and choose the closest choice to your answer. 2.575 1.03 2.15 1.64 3.30
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