What is the likelihood the sample mean

Reference no: EM131028355

The mean amount purchased by each customer at Churchill's Grocery Store is $23.50 with a standard deviation of $5.00. The population is positively skewed. For a sample of 50 customers, answer the following questions:

What is the likelihood the sample mean is at least $25.00?
What is the likelihood the sample mean is greater than $22.50 but less than $25.00?
Within what limits will 90% of the sample means occur?

Reference no: EM131028355

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