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 23 light bulbs has a mean life of 751 hours. Assume the population is normally distributed and the population standard deviation is 61 hours. At a= 0.05, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e). Reject Ho- Reject Ho- Reject Ho Reject Hg- se (c) Identify the standardized test statistic. Use technology. see z= - 1.42 (Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis, and (e) interpret the decision in the context of the original claim. see O A. Fail to reject Ho. There is not sufficient evidence to reject the claim that O B. Fail to reject Ho. There is sufficient evidence to reject the claim that mean bulb life is at least 769 hours. mean bulb life is at least 769 hours. O C. Reject Ho. There is sufficient evidence to reject the claim that mean bulb life is at least 769 hours. O D. Reject Ho. There is not sufficient evidence to reject the claim that mean bulb life is at least 769 hours. Next 11:59pm search 4: 75°F 4) 11,

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 23 light bulbs has a mean life of 751 hours. Assume the population is normally distributed and the population standard deviation is 61 hours. At a= 0.05, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e). Reject Ho- Reject Ho- Reject Ho Reject Hg- se (c) Identify the standardized test statistic. Use technology. see z= - 1.42 (Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis, and (e) interpret the decision in the context of the original claim. see O A. Fail to reject Ho. There is not sufficient evidence to reject the claim that O B. Fail to reject Ho. There is sufficient evidence to reject the claim that mean bulb life is at least 769 hours. mean bulb life is at least 769 hours. O C. Reject Ho. There is sufficient evidence to reject the claim that mean bulb life is at least 769 hours. O D. Reject Ho. There is not sufficient evidence to reject the claim that mean bulb life is at least 769 hours. Next 11:59pm search 4: 75°F 4) 11,

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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