A normally distributed set of scores has a μ = 92 and a σ = 10. What is the probability that a randomly selected score will fall between 72 and 82?
A) .8413
B) .8185
C) .3413
D) .1359

Question

Quizplus · Accepted Answer

To find the probability that a score falls between 72 and 82, calculate the z-scores for both values: z = (X - μ) / σ. For 72, z = (72 - 92) / 10 = -2. For 82, z = (82 - 92) / 10 = -1. The probability of a z-score between -2 and -1 is approximately 0.1359.

A Normally Distributed Set of Scores Has a μ =