A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 743 hours. A random sample of 21 light bulbs has a mean life of hours. Assume the population is normally distributed and the population standard deviation is 64 hours. At a = 0.08, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e). (a) Identify the null hypothesis and alternative hypothesis. Ο Α. H : μ2 743 (claim) H3: u<743 O D. Ho: µs733 Ha: u> 733 (claim) O B. Ho: H<733 (claim) OC. Ho: µ= 733 Ha: μ2733 Ha: u#733 (claim) O E. Ho: µ#743(claim) O F. Ho: µ>743 Hạ: us743 (claim) Hạ: u= 743 (b) Identify the critical value(s). Use technology. Zo = (Use a comma to separate answers as needed. Round to two decimal places as needed.)
A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 743 hours. A random sample of 21 light bulbs has a mean life of hours. Assume the population is normally distributed and the population standard deviation is 64 hours. At a = 0.08, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e). (a) Identify the null hypothesis and alternative hypothesis. Ο Α. H : μ2 743 (claim) H3: u<743 O D. Ho: µs733 Ha: u> 733 (claim) O B. Ho: H<733 (claim) OC. Ho: µ= 733 Ha: μ2733 Ha: u#733 (claim) O E. Ho: µ#743(claim) O F. Ho: µ>743 Hạ: us743 (claim) Hạ: u= 743 (b) Identify the critical value(s). Use technology. Zo = (Use a comma to separate answers as needed. Round to two decimal places as needed.)
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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(c) Identify the standardized test statistic. Use technology.
z=kjkj
(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.
RejectH0. There is sufficient evidence to reject the claim that mean bulb life is at least 743 hours.
Fail to reject H0. There is sufficient evidence to reject the claim that mean bulb life is at least 743 hours.
Reject H0. There is not sufficient evidence to reject the claim that mean bulb life is at least 743 hours.
Fail to reject H0. There is not sufficient evidence to reject the claim that mean bulb life is at least 743 hours.
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