The manufacturer of a certain brand of household light bulbs claims that the bulbs produced by their factory have an average life of 2,000 hours. The mean and standard deviation of 10 light bulbs selected from the manufacturer’s production process were calculated to be 1,960 and 142 hours, respectively. Do the sample data present sufficient evidence to reject the manufacturer’s claim? Test by using alpha = 0.05.
The manufacturer of a certain brand of household light bulbs claims that the bulbs produced by their factory have an average life of 2,000 hours. The mean and standard deviation of 10 light bulbs selected from the manufacturer’s production process were calculated to be 1,960 and 142 hours, respectively. Do the sample data present sufficient evidence to reject the manufacturer’s claim? Test by using alpha = 0.05.
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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- The manufacturer of a certain brand of household light bulbs claims that the bulbs produced by their factory have an average life of 2,000 hours. The
mean and standard deviation of 10 light bulbs selected from the manufacturer’s production process were calculated to be 1,960 and 142 hours, respectively. Do the sample data present sufficient evidence to reject the manufacturer’s claim? Test by using alpha = 0.05.
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