For some value of Z,the probability that a standard normal variable is below Z is 0.2090.The value of Z is
A) −0.81.
B) −0.31.
C) 1.96.
D) 0.31.

Question

Quizplus · Accepted Answer

The value of Z that corresponds to a probability of 0.2090 in a standard normal distribution is approximately -0.81. This is found by looking up the probability in a Z-table or using a statistical tool to find the Z-score that corresponds to the lower tail probability of 0.2090.

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