The level of confidence is %.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Please include formula and calculation, and also Mention the value which you take from Outside.
Transcribed Image Text:In a sample of 80 light bulbs, the mean lifetime was 1217 hours with a
standard deviation of 53 hours.
An engineer claims that the mean lifetime is between 1208 and 1226 hours. With what level
of confidence can this statement be made? (Express the final answer as a percent and
round to two decimal places.)
The level of confidence is
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