samling distributions

Project Description:

the mean amount purchased by a typical customer at churchill's grocery store is $23.50 with a standard deviation of $6.00. assume the distribution of amounts purchased follows the normal distribution. for a sample of 52 customers, answer the following questions.





(a)


what is the likelihood the sample mean is at least $25.50? (round z value to 2 decimal places and final answer to 4 decimal places.)





probability







(b)


what is the likelihood the sample mean is greater than $22.50 but less than $25.50? (round z value to 2 decimal places and final answer to 4 decimal places.)





probability







(c)


within what limits will 95 percent of the sample means occur? (round your answers to 2 decimal places.)





sample mean



and
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Price Type: Negotiable

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