The mean of a set of credit scores is u=690 and o=14. which statement must be true?

a. z690 is within 1 standard deviation of the mean.
b. z690 is between 1 and 2 standard deviations of the mean.
c. z690 is between 2 and 3 standard deviations of the mean.
d. z690 is more than 3 standard deviations of the mean.

the correct answer is:

a) z690 is within 1 standard deviation of the mean.

explanation:

a z-score tells us how many standard deviations away from the mean a value is.

a credit score of 690 is on the mean, so it is not away from it at all; this makes a z-score for a credit score of 690 equal to 0.

since it is not away from the mean, it is within 1 standard deviation above or below the mean.

B

Step-by-step explanation:

you can use the process of elimination. For all of the answers the minimum and the maximum are incorrect except for option B.