A company manufactures light bulbs. The company wants the bulbs to have a mean life span of 1002 hours. This average is maintained by periodically testing random samples of 16 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 1015 hours and the standard deviation is 24 hours. Assume that life spans are approximately normally distributed. Is the company making acceptable light​ bulbs? Explain.   the company (is/is not) making acceptable lightbulbs because the t-value is t=___ and t0.99= ___

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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A company manufactures light bulbs. The company wants the bulbs to have a mean life span of
1002
hours. This average is maintained by periodically testing random samples of
16
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
1015
hours and the standard deviation is
24
hours. Assume that life spans are approximately normally distributed. Is the company making acceptable light​ bulbs? Explain.
 
the company (is/is not) making acceptable lightbulbs because the t-value is t=___ and t0.99= ___
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