Suppose that we will take a random sample of sizenfrom a population having meanand standard deviation . For each of the following situations, find the mean, variance, and standard deviation of the sampling distribution of the sample mean:

(a)= 18, = 4,n= 37(Round your answers of"" and "²" to 4 decimal places.)

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(b)= 576, = .4,n= 148(Round your answers of"" and "²" to 4 decimal places.)

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(c)= 6, = .1,n= 3(Round your answers of"" and "²" to 4 decimal places.)

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(d)= 80, = 7,n= 1,460(Round your answers of"" and "²" to 4 decimal places.)

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