For some positive value of Z, the probability that a standard normal variable is between 0 and Z is 0.2910. The value of Z is:
A) 0.17
B) 0.81
C) 1.25
D) 1.65

Question

Quizplus · Accepted Answer

The probability of 0.2910 corresponds to the area under the standard normal curve between 0 and Z. Consulting a standard normal (Z) table or using a calculator designed for statistics, we find that a Z-score of approximately 0.81 gives an area of 0.2910 to the right of the mean (0) up to Z.

For Some Positive Value of Z, the Probability That a Standard