The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the mean life of a large shipment of light bulbs is 7,507 hours. The population standard deviation is 700 hours. A random sample of 49 light bulbs indicates a sample mean life of 7,357 hours.a. At the 0.05 level of significance, is there evidence that the mean life is different from 7,507 hours?b. Compute the p-value and interpret its meaning.c. Construct a 95% confidence interval estimate of the population mean life of the light bulbs.d. Compare the results of (a) and (c). What conclusions do you reach?Explanation:- **No graphs or diagrams are present in this text.** - The text is structured as a problem set with four parts, guiding the reader through a statistical hypothesis testing process. - It involves checking the significance of the difference between a sample mean and a population mean, calculating p-values, and constructing confidence intervals.- The context focuses on quality control in a manufacturing setting, specifically related to the lifespan of light bulbs.

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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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