A normal distribution has µ = 80 and σ = 10.What is the probability of randomly selecting a score greater than 90 from this distribution?
A)p = 0.8413
B)p = 0.1587
C)p = 0.3085
D)p = 0.6915

Question

A normal distribution has µ = 80 and σ = 10.What is the probability of randomly selecting a score greater than 90 from this distribution?​
A)​p = 0.8413
B)​p = 0.1587
C)​p = 0.3085
D)​p = 0.6915

Quizplus · Accepted Answer

The probability of selecting a score greater than 90 from a normal distribution with µ = 80 and σ = 10 can be found using the Z-score formula. The Z-score for 90 is (90-80)/10 = 1. The probability of a Z-score greater than 1 in a standard normal distribution is approximately 0.1587.

A Normal Distribution Has µ = 80 and σ =