A company manufactures light bulbs. The company wants the bulbs to have a mean life span of 994 hours. This average is maintained by periodically testing random samples of 25 light bulbs. If the t-value falls between -to.99 and to.99, then the company will be satisfied that it is manufacturing acceptable light bulbs. For a random sample, the mean life span of the sample is 1002 hours and the standard deviation is 22 hours. Assume that life spans are approximately normally distributed. Is the company making acceptable light bulbs? Explain. The company making acceptable light bulbs because the t-value for the sample is t= and to.99 (Round to two decimal places as needed.) = 0.
A company manufactures light bulbs. The company wants the bulbs to have a mean life span of 994 hours. This average is maintained by periodically testing random samples of 25 light bulbs. If the t-value falls between -to.99 and to.99, then the company will be satisfied that it is manufacturing acceptable light bulbs. For a random sample, the mean life span of the sample is 1002 hours and the standard deviation is 22 hours. Assume that life spans are approximately normally distributed. Is the company making acceptable light bulbs? Explain. The company making acceptable light bulbs because the t-value for the sample is t= and to.99 (Round to two decimal places as needed.) = 0.
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
A company manufactures light bulbs. The company wants the bulbs to have a mean life span of
994
hours. This average is maintained by periodically testing random samples of
25
light bulbs. If the t-value falls between
−t0.99
and
t0.99,
then the company will be satisfied that it is manufacturing acceptable light bulbs. For a random sample, the mean life span of the sample is
1002
hours and the standard deviation is
22
hours. Assume that life spans are approximately
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