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(c) Identify the standardized test statistic. Use technology. =(Round to two decimal places as needed.)

(c) Identify the standardized test statistic. Use technology. =(Round to two decimal places as needed.)

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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A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 769 hours. A random sample of 29 light bulbs has a mean life of 756 hours. Assume the population is normally distributed and the population standard deviation is 64 hours. At a = 0.02, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e). (a) Identify the null hypothesis and alternative hypothesis. OA. Ho: <756 (claim) Hgi με 756 OD. Ho: #769(claim) H₂: H=769 Reject Ho -4 Fail to reject Ho example (b) Identify the critical value(s). Use technology. Zo = -2.05 (Use a comma to separate answers as needed. Round to two decimal places as needed.) Identify the rejection region(s). Choose the correct answer below. O A. ỏ Reject Ho OB. Ho: H=756 Q Ha: #756 (claim) E. Ho: 2769 (claim) H₂H<769 Fail to reject Ho ANA Reject Ho Get more help. B (c) Identify the standardized test statistic. Use technology. z = (Round to two decimal places as needed.) OC. Ho: μ>769 OF. Ho: μ≤ 756 Ha: HS769 (claim) O C. Ha: >756 (claim) Clear all Fail to reject Ho Reject Ho- Check answer
Transcribed Image Text:A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 769 hours. A random sample of 29 light bulbs has a mean life of 756 hours. Assume the population is normally distributed and the population standard deviation is 64 hours. At a = 0.02, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e). (a) Identify the null hypothesis and alternative hypothesis. OA. Ho: <756 (claim) Hgi με 756 OD. Ho: #769(claim) H₂: H=769 Reject Ho -4 Fail to reject Ho example (b) Identify the critical value(s). Use technology. Zo = -2.05 (Use a comma to separate answers as needed. Round to two decimal places as needed.) Identify the rejection region(s). Choose the correct answer below. O A. ỏ Reject Ho OB. Ho: H=756 Q Ha: #756 (claim) E. Ho: 2769 (claim) H₂H<769 Fail to reject Ho ANA Reject Ho Get more help. B (c) Identify the standardized test statistic. Use technology. z = (Round to two decimal places as needed.) OC. Ho: μ>769 OF. Ho: μ≤ 756 Ha: HS769 (claim) O C. Ha: >756 (claim) Clear all Fail to reject Ho Reject Ho- Check answer
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