Question: The mean amount purchased by a typical customer at Churchill's Grocery Store is $21.00 with a standard deviation of $7.00. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 42 customers, answer the following questions.

1. What is the likelihood the sample mean is at least $22.50? (Round z value to 2 decimal places and final answer to 4 decimal places.)
2. What is the likelihood the sample mean is greater than $20.00 but less than $22.50? (Round z value to 2 decimal places and final answer to 4 decimal places.)
3. Within what limits will 99 percent of the sample means occur? (Round your answers to 2 decimal places)

Price: $2.99

Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document