Will improving customer service result in higher stock prices for the companies providing the better service? "When a company's satisfaction score has improved over the prior year's results and is above the national average (75.7), studies show its shares have a good chance of outperforming the broad stock market in the long run." The following satisfaction scores of three companies for the fourth quarters of two previous years were obtained from the American Customer Satisfaction Index. Assume that the scores are based on a poll of 61 customers from each company. Because the polling has been done for several years, the standard deviation can be assumed to equal 7 points in each case. Will improving customer service result in higher stock prices for the companies providing the better service? "When a company's satisfaction score has improved over theprior year's results and is above the national average (75.7), studies show its shares have a good chance of outperforming the broad stock market in the long run." Thefollowing satisfaction scores of three companies for the fourth quarters of two previous years were obtained from the American Customer Satisfaction Index. Assumethat the scores are based on a poll of 61 customers from each company. Because the polling has been done for several years, the standard deviation can be assumed toGlosequal 7 points in each case.ETTCompanyYear 1 ScoreYear 2 ScoreRite Aid7778Expedia7375J.C. Penney7680a. For Rite Aid, is the increase in the satisfaction score from Year 1 to Year 2 statistically significant? Use a = 0.05 and null hypothesis is Ho : µ1 – µ2 <0. Find thetest statistic and p-value. Use Table 1 of Appendix B.z value(to 2 decimals)p-value(to 4 decimals)What can you conclude?The differenceSelect your answer - V statistically significant.b. Can you conclude that the Year 2 score for Rite Aid is above the national average of 75.7? Use a = 0.05 and test the null hypothesis Ho : u < 75.7. Find the teststatistic and p-value. Use Table 1 of Appendix B.z value(to 2 decimals)p-value(to 4 decimals) b. Can you conclude that the Year 2 score for Rite Aid is above the national average of 75.7? Use a = 0.05 and test the null hypothesis Ho : µ < 75.7. Find the teststatistic and p-value. Use Table 1 of Appendix B.z value(to 2 decimals)p-value(to 4 decimals)What can you conclude?We- Select your answer - v that customer service has improved for Rite Aid.c. For Expedia, is the increase from Year 1 to Year 2 statistically significant? Use a = 0.05 and test the null hypothesis Ho H1 - 42 <0. Find the test statistic and p-value. Use Table 1 of Appendix B.z value(to 2 decimals)p-value(to 4 decimals)CWhat can you conclude?The differenceSelect your answer - v statistically significant.d. When conducting a hypothesis test with the values given for the standard deviation, sample size, and a, how large must the increase from Year 1 to Year 2 be for it tobe statistically significant?(to 2 decimals)e. Use the result of part (d) to state whether the increase for J.C. Penney from year 1 to year 2 is statistically significant.The increaseSelect your answerv statistically significant.

Answered: Image /qna-images/answer/5654ca06-77d9-4767-bd50-981acd493f8d.jpg

Will improving customer service result in higher stock prices for the companies providing the better service? "When a company's satisfaction score has improved over the prior year's results and is above the national average (75.7), studies show its shares have a good chance of outperforming the broad stock market in the long run." The following satisfaction scores of three companies for the fourth quarters of two previous years were obtained from the American Customer Satisfaction Index. Assume that the scores are based on a poll of 61 customers from each company. Because the polling has been done for several years, the standard deviation can be assumed to equal 7 points in each case.

Will improving customer service result in higher stock prices for the companies providing the better service? "When a company's satisfaction score has improved over the prior year's results and is above the national average (75.7), studies show its shares have a good chance of outperforming the broad stock market in the long run." The following satisfaction scores of three companies for the fourth quarters of two previous years were obtained from the American Customer Satisfaction Index. Assume that the scores are based on a poll of 61 customers from each company. Because the polling has been done for several years, the standard deviation can be assumed to equal 7 points in each case.

College Algebra

1st Edition

ISBN:9781938168383

Author:Jay Abramson

Publisher:Jay Abramson

Chapter9: Sequences, Probability And Counting Theory

Section9.7: Probability

Problem 1SE: What term is used to express the likelihood of an event occurring? Are there restrictions on its...

See similar textbooks