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# The mean amount purchased by a typical customer at Churchill's Grocery Store is \$23.50 with a standard deviati?

The mean amount purchased by a typical customer at Churchill's Grocery Store is \$23.50 with a standard deviation of \$5.00. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the following questions. (a) What is the likelihood the sample mean is at least \$25.00? (b) What is the likelihood the sample mean is greater than \$22.50 but less than \$25.00? (c) Within what limits will 90 percent of the sample means occur?
a few seconds ago 1 Answer

a. less than even odds. b. less than a. c. you can't figure out 90% of 23.50, and subtract that from 23.50, and add that to 23.50? You'll never pass the class.
a few seconds ago

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