The number of hours in a month a sample of 12 people chosen at random from a normal population work is as follows: 55,55,54,56,56,58,60,62,61,59,59,60. Can we conclude that the mean of the sample differs significantly from the assumed population average of 56 hours? Given that t 11,0.05  2.201.

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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The number of hours in a month a sample of 12 people chosen at random from a
normal population work is as follows: 55,55,54,56,56,58,60,62,61,59,59,60. Can we
conclude that the mean of the sample differs significantly from the assumed
population average of 56 hours? Given that
t
11,0.05  2.201.

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