Question

The average number of moves a person makes in his or her lifetime is 12 and...

The average number of moves a person makes in his or her lifetime is

12

and the standard deviation is

3.3

. Assume that the sample is taken from a large population and the correction factor can be ignored. Round the final answers to four decimal places and intermediate

z

value calculations to two decimal places.

1.Find the probability that the mean of a sample of

25

people is less than

10

.

2.Find the probability that the mean of a sample of

25

people is greater than

10

.

3. Find the probability that the mean of a sample of

25

people is between

11

and

12

.

Math   Statistics-And-Probability   
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