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The Amount of Money Spent on Food Per Week by an American

Question 4

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The amount of money spent on food per week by an American family is known to have a mean of $92 and a standard deviation of $9. Suppose a random sample of 81 families is taken and their sample mean food expenditure is calculated.
Find the mean of the sampling distribution of The amount of money spent on food per week by an American family is known to have a mean of $92 and a standard deviation of $9. Suppose a random sample of 81 families is taken and their sample mean food expenditure is calculated. Find the mean of the sampling distribution of . ______________ Find the standard deviation. ______________ Find the probability that the sample mean does not exceed $90.40. ______________ .
______________
Find the standard deviation.
______________
Find the probability that the sample mean does not exceed $90.40.
______________

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