Use the normal distribution of SAT critical reading
Use the normal distribution of SAT critical reading
scores for which the mean is 513 and the standard deviation is 120. Assume the variable x is normally distributed.
(a)
What percent of the SAT verbal scores are less than 650?
(b)
If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 575?
(a) Approximately
____?
% of the SAT verbal scores are less than 650.
(Round to two decimal places as needed.)
(b) You would expect that approximately
____?
SAT verbal scores would be greater than 575. (Round to the nearest whole number as needed.)
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