1. In a normal frequency distribution, 32% of the cases:

A) fall between 1 standard deviation above and 1 standard deviation below the mean.

B) fall beyond 1 standard deviation above and 1 standard deviation below the mean.

C) fall between the mode and the median.

D) fall beyond 2 standard deviations above and 2 standard deviations below the mean.

E) determine whether the distribution is leptokurtic.

2. Standard scores (Z) are useful because they always have a mean of zero and a standard deviation of one.

A) True

B) False