GRE math scores are normally distributed with a mean µ = 500 and standard deviation, ...

GRE math scores are normally distributed with a mean µ = 500 and standard deviation,  = 55. This year Howard University admitted 1500 graduate students.
Calculate:
a. the number of students with test scores above 520, below 490, between 482 & 522

b. how high a score is needed to be in the top 10%, top 5%?

Expert Solution

(a)

Thus the number of students with test scores above 520 = 0.3594*1500 = 539.1 = 540

Thus the number of students with test scores below 490 = 0.4286*1500 =642.9 = 643

Thus the number of students with test scores between 482 & 522 = 0.2847*1500 = 427.05 = 428

(b)

orchestra answered 2 years ago

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