SOLUTION: 5.2.17 Use the normal distribution of SAT critical reading scores for which the mean is 504 and the standard deviation is 112. Assume the variable x is normally distributed.

Question 1118000: 5.2.17
Use the normal distribution of SAT critical reading scores for which the mean is 504 and the standard deviation is 112. Assume the variable x is normally distributed.
left parenthesis a right parenthesis
What percent of the SAT verbal scores are less than 675?
If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 525?
Approximately
_____% of the SAT verbal scores are less than 675.
(Round to two decimal places as needed.)
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
mean 504 sd 112
z<(675-604)/112
z<1.53
probability is 0.9370
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greater than 525
(525-504)/112 so z>0.1875
probability is 0.4256. Rounding upward, it would be 426 scores.
---------
93.70% are < 675

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