Suppose the average number of returns processed by employees of a tax preparation service during tax season is

1010

per day with a standard deviation of

66

per day. A random sample of 36 employees taken during tax season revealed the number of returns processed daily shown below. Use these data to answer parts a through c.

12	11	18	13	8	14	9	15	16	13	13	17	12	9	17	14	15	12
9	10	8	15	16	9	10	11	13	10	12	7	3	3	17	9	9	5

Question content area bottom

Part 1

a. What is the probability of having a sample mean equal to or smaller than the sample mean for this sample if the population mean is 10

processed returns daily with a standard deviation of 6

returns per day?

The probability is

enter your response here.

(Round to four decimal places as needed.)