The net profit from a certain investment is normally distributed with a mean of $2,500 and a standard deviation of $1,000. The probability that the investor's net gain will be at least $2,000 is ___.
A) 0.0000
B) 0.3413
C) 0.0005
D) 0.0500
E) 0.6915

Question

Quizplus · Accepted Answer

The Z-score for $2,000 is (2000-2500)/1000 = -0.5. The probability of a Z-score greater than -0.5 is 0.6915.

The Net Profit from a Certain Investment Is Normally Distributed