A January 2010 article on money cnn com reported that the average monthly cable bill in the United States was $75 The article also stated that the annual percentage increase in the average monthly cable bill is 5 money cnn com 2010 01 06 news companies cable bill cost increase index htm) Suppose that the current distribution of all monthly cable bills in the United States is approximately normal with a mean of $82 69 and a standard deviation of $11 17 Let be the average monthly cable bill for 23 randomly selected U S households with cable Find the mean and standard deviation of , and comment on the shape of its sampling distribution

Question: A January 2010 article on money.cnn.com reported that the average monthly cable bill in the United States was $75. The article also stated that the

A January 2010 article on money.cnn.com reported that the average monthly cable bill in the United States was $75. The article also stated that the annual percentage increase in the average monthly cable bill is 5% money.cnn.com/2010/01/06/news/companies/cable_bill_cost_increase/index.htm). Suppose that the current of all monthly cable bills in the United States is approximately normal with a mean of $82.69 and a standard deviation of $11.17. Let be the average monthly cable bill for 23 randomly selected U.S. households with cable. Find the mean and standard deviation of , and comment on the shape of its sampling

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