Question

the number or interviews recieved by a college graduating class is normally distributed with a mean...

the number or interviews recieved by a college graduating class is normally distributed with a mean of 8 interviews , standard deviation of 2 interviews

45% of all graduates recieve more than how many interviews?

a. 11.92
b. 8.25
c. 10.11
d. 9.43

which answer is correct?
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Answer #1

mean = 8
and std. dev. = 2

for top 45%, the z-value is 0.13

Using central limit theorem,
x = mean + z*sigma
x = 8 + 0.13*2
x = 8.25

option B

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