The mean annual income for adult women in one city is

$28,520

and the standard deviation of the incomes is

$5,500.

The distribution of incomes is skewed to the right. For samples of size

97

determine whether the distribution of

x

is normal or approximately normal and give its mean and standard deviation.

A.

Normal, mean

x=$28,520,

standard deviation x=$558

B.

Approximately normal, mean

x=$28,520,

standard deviation

x=$5,500

C.

Normal, mean

x=$28,520,

standard deviation

x=$5,500

D.

Approximately normal, mean

x=$28,520,

standard deviation