Let the random variable Z follow a standard normal distribution.The total probability to the right of Z = 2.18 and to the left of Z = -1.75 is:
A)0.4854
B)0.4599
C)0.0146
D)0.0547

Question

Quizplus · Accepted Answer

The probability to the right of Z = 2.18 is 1 - P(Z ≤ 2.18) = 1 - 0.9854 = 0.0146. The probability to the left of Z = -1.75 is P(Z ≤ -1.75) = 0.0401. Adding these probabilities gives 0.0146 + 0.0401 = 0.0547.

Let the Random Variable Z Follow a Standard Normal Distribution