<PRE><B>Question 1029077</B>
 Suppose a truck company takes 31 hours of labor to build a car and the labor time is distributed with standard deviation 2 hours. y means the sample space for a sample of 25 trucks. 
What is the mean and standard deviation for Y? 
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mean of the sample means of size 25 is 31 hrs
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std of the sample means of size 25 is 2/sqrt(25) = 2/5
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Cheers,
Stan H.
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