Use the normal distribution of SAT critical reading scores for which the mean is

514

and the standard deviation is

115

Assume the variable x is normally distributed.

left parenthesis a right parenthesis(a)

What percent of the SAT verbal scores are less than

675?

left parenthesis b right parenthesis(b)

If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than

575?