Question

The distribution of sample means for a group of test

scores for samples of 100 scores is normal with a mean of 64.9 and a standard deviation of 1.9. Suppose you take a sample of 100 test scores and find that the mean is 66.8

How many standard deviations is the sample mean from the mean of the distribution of sample​ means? Round to the nearest tenth as needed.

A.

1.9

1.9 standard​ deviation(s) above the mean

B.

1.0

1.0 standard​ deviation(s) above the mean

C.

10.0

10.0 standard​ deviation(s) above the mean

D.

0.9

0.9 standard​ deviation(s) above the mean

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