The distribution of certain test scores is a nonstandard normal distribution wit

Question

The distribution of certain test scores is a nonstandard normal distribution with a mean of 50 and a standard deviation of 6. What are the values of the mean and standard deviation after all test scores have been standardized by converting them to z-scores using z = (x - µ) / ?

Select one:

a. The mean is 0 and the standard deviation is 0.5.

b. The mean is 0 and the standard deviation is 1.

c. The mean is 10 and the standard deviation is 100.

d. The mean is 100 and the standard deviation of 10.

e. The mean is 1 and the standard deviation is 0.

Explanation / Answer

Ans : b. The mean is 0 and the standard deviation is 1.

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