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A manufacturer of Christmas light bulb claims that the average life of its product will exceed 40 hours. A company is willing to buy large quantities of bulbs if the claim is true. A random sample of 56 light bulbs is tested, and is found that the sample mean is 45 hours. 1. If the population has a standard deviation of 5 hours, is it likely that bulb will be bought? a = 10% Formulate the Null hypothesis. 2. determine the type of test. 3. What is the computed value of Z

A manufacturer of Christmas light bulb claims that the average life of its product will exceed 40 hours. A company is willing to buy large quantities of bulbs if the claim is true. A random sample of 56 light bulbs is tested, and is found that the sample mean is 45 hours. 1. If the population has a standard deviation of 5 hours, is it likely that bulb will be bought? a = 10% Formulate the Null hypothesis. 2. determine the type of test. 3. What is the computed value of Z

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 manufacturer of Christmas light bulb claims that the average life of its product will exceed 40 hours. A company is willing to buy large quantities of bulbs if the claim is true. A random sample of 56 light bulbs is tested, and is found that the sample mean is 45 hours.

1. If the population has a standard deviation of 5 hours, is it likely that bulb will be bought? a = 10% Formulate the Null hypothesis.

2. determine the type of test.

3. What is the computed value of Z

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