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) 0.31
D) 1.96
E) 1.62

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 standard normal (Z) table or using a statistical software 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