*Course Hero Chapter 9 Section 3.1 (two-tail x "* Chapter 9 Section 3.1 (one-tail x WebAssign Homework X C webassign.net/web/Student/Assignment-Responses/last?dep=26765494 Apps 9/ Web Slice Gallery _ Imported From IE & Kronos WORKFOR... Renaissance Place Student Informati... Reading List You may need to use the appropriate appendix table or technology to answer this question. Consider the following hypothesis test. Ho: M = 15 Ha: M # 15 A sample of 50 provided a sample mean of 14.06. The population standard deviation is 3. (a) Find the value of the test statistic. (Round your answer to two decimal places.) (b) Find the p-value. (Round your answer to four decimal places.) p-value = (c) At a = 0.05, state your conclusion. Reject Ho. There is sufficient evidence to conclude that u # 15. Reject Ho. There is insufficient evidence to conclude that u # 15. Do not reject Ho. There is sufficient evidence to conclude that M # 15. O Do not reject Ho. There is insufficient evidence to conclude that y # 15. (d) State the critical values for the rejection rule. (Round your answers to two decimal places. If the test is one-tailed, enter NONE for the unused tail.) test statistic s test statistic > State your conclusion. O Reject Ho. There is sufficient evidence to conclude that u # 15. Reject Ho. There is insufficient evidence to conclude that u # 15. Do not reject Ho. There is sufficient evidence to conclude that u # 15. Do not reject Ho. There is insufficient evidence to conclude that u # 15.*Course Hero Chapter 9 Section 3.1 (two-tail x * Chapter 9 Section 3.1 (one-tail x WebAssign Homework X C webassign.net/web/Student/Assignment-Responses/last?dep=26765494 Apps )/ Web Slice Gallery Imported From IE Kronos WORKFOR... Renaissance Place Student Informati... Reading List You may need to use the appropriate appendix table or technology to answer this question. Consider the following hypothesis test. Ho: M = 22 Ha: M # 22 A sample of 75 is used and the population standard deviation is 10. Compute the p-value and state your conclusion for each of the following sample results. Use a = 0.01. (Round your test statistics to two decimal places and your p-values to four decimal places.) (a) x = 24 Find the value of the test statistic. Find the p-value. p-value = State your conclusion. O Do not reject Ho. There is insufficient evidence to conclude that u # 22. O Reject Ho. There is sufficient evidence to conclude that u # 22. O Do not reject Ho. There is sufficient evidence to conclude that u # 22. O Reject Ho. There is insufficient evidence to conclude that u # 22. (b) x = 25.2 Find the value of the test statistic. Find the p-value. p-value = State your conclusion. Do not reject Ho. There is insufficient evidence to conclude that u # 22. Reject Ho. There is sufficient evidence to conclude that u # 22. Do not reject Ho. There is sufficient evidence to conclude that u # 22. Reject Ho. There is insufficient evidence to conclude that u # 22.*Course Hero X Chapter 9 Section 3.1 (two-tail x " Chapter 9 Section 3.1 (one-tail x WebAssign Homework X C D webassign.net/web/Student/Assignment-Responses/last?dep=26765494 Apps / Web Slice Gallery Imported From IE Kronos WORKFOR... Renaissance Place Student Informati... Reading List (c) x = 21 Find the value of the test statistic. Find the p-value. p-value = State your conclusion. O Do not reject Ho. There is insufficient evidence to conclude that u # 22. Reject Ho. There is sufficient evidence to conclude that u # 22. Do not reject Ho. There is sufficient evidence to conclude that u # 22. Reject Ho. There is insufficient evidence to conclude that u # 22. Need Help? Read It Master It 3. [6/8 Points] DETAILS PREVIOUS ANSWERS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER You may need to use the appropriate appendix table or technology to answer this question. The average salary, including bonus payments, of Wall Street workers was $398,600 in 2018 (according to Newsday.com). Assume a population standard deviation of $155,000. Suppose you are hoping to be hired by one of these firms after graduation. You want to determine whether the average salary at the firm you are looking at is different from the other securities firms. (a) State the null and alternative hypotheses you would use to test whether the firm's annual salary was different from the population mean. HO:M = V V 398,600 Ha: M # 398,600 v (b) Using a = 0.02, what are the critical values for the test statistic (to 2 decimals)? Za/2 = +*Course Hero Chapter 9 Section 3.1 (two-tail x " Chapter 9 Section 3.1 (one-tail x WebAssign Homework X C webassign.net/web/Student/Assignment-Responses/last?dep=26765494 Apps Web Slice Gallery Imported From IE Kronos WORKFOR... Renaissance Place Student Informati... Reading List 3. [6/8 Points] DETAILS PREVIOUS ANSWERS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER You may need to use the appropriate appendix table or technology to answer this question. The average salary, including bonus payments, of Wall Street workers was $398,600 in 2018 (according to Newsday.com). Assume a population standard deviation of $155,000. Suppose you are hoping to be hired by one of these firms after graduation. You want to determine whether the average salary at the firm you are looking at is different from the other securities firms (a) State the null and alternative hypotheses you would use to test whether the firm's annual salary was different from the population mean. v V 398,600 Ha : M # 398,600 V (b) Using a = 0.02, what are the critical values for the test statistic (to 2 decimals)? Za/2 = 1 (c) Suppose a sample of 45 employees from the specific firm showed a sample mean of $360,000. Compute the value of the test statistic. (Round your answer to two decimal places.) (d) Based on this test, I should Reject Ho. Reject Ha. Not reject Ho. Not reject Ha. (e) State your conclusion. There is sufficient evidence to conclude that u # $398,600. There is insufficient evidence to conclude that u # $398,600. There is sufficient evidence to conclude that u = $398,600. There is insufficient evidence to conclude that M = $398,600.*Course Hero Chapter 9 Section 3.1 (two-tail x * Chapter 9 Section 3.1 (one-tail x WebAssign Homework X C webassign.net/web/Student/Assignment-Responses/last?dep=26765494 Apps / Web Slice Gallery Imported From IE Kronos WORKFOR... Renaissance Place Student Informati... Reading List 4. [5/9 Points] DETAILS PREVIOUS ANSWERS ASWSBE13 9.E.022. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER You may need to use the appropriate appendix table or technology to answer this question. CCN and ActMedia provided a television channel targeted to individuals waiting in supermarket checkout lines. The channel showed news, short features, and advertisements. The length of the program was based on the assumption that the population mean time a shopper stands in a supermarket checkout line is 8 minutes. A sample of actual waiting times will be used to test this assumption and determine whether actual mean waiting time differs from this standard (a) Formulate the hypotheses for this application. O' Ho: M 2 8 Ha: M 8 O Ho: M 8 Ha: US 8 (b) A sample of 135 shoppers showed a sample mean waiting time of 8.4 minutes. Assume a population standard deviation of o = 3.2 minutes. What is the test statistic? (Round your answer to two decimal places.) What is the p-value? (Round your answer to four decimal places.) p-value = (c) At a = 0.05, what is your conclusion? Do not reject Ho. There is sufficient evidence to conclude that the population mean waiting time differs from 8 minutes. Reject Ho. There is insufficient evidence to conclude that the population mean waiting time differs from 8 minutes.*Course Hero X Chapter 9 Section 3.1 (two-tail x * Chapter 9 Section 3.1 (one-tail x WebAssign Homework X C D webassign.net/web/Student/Assignment-Responses/last?dep=26765494 Apps Web Slice Gallery Imported From IE & Kronos WORKFOR... Renaissance Place Student Informati.. Reading List (b) A sample of 135 shoppers showed a sample mean waiting time of 8.4 minutes. Assume a population standard deviation of o = 3.2 minutes. What is the test statistic? (Round your answer to two decimal places.) What is the p-value? (Round your answer to four decimal places.) p-value = (c) At a = 0.05, what is your conclusion? Do not reject Ho. There is sufficient evidence to conclude that the population mean waiting time differs from 8 minutes. O Reject Ho. There is insufficient evidence to conclude that the population mean waiting time differs from 8 minutes. Do not reject Ho. There is insufficient evidence to conclude that the population mean waiting time differs from 8 minutes. O Reject Ho. There is sufficient evidence to conclude that the population mean waiting time differs from 8 minutes. (d) Compute a 95% confidence interval for the population mean. (Round your answers to two decimal places.) to Does it support your conclusion? The confidence interval | contains the hypothesized value of Mo, therefore we do not reject v . H. The conclusion is V V the same as in part (c). Need Help? Read It
