Question

Given that Z is a standard normal variable, the value z for which (P ≤ z) = 0.50 is a) 0.1736 b) -0.1736 c) 0.00 d) -0.4 7. If the time customers spend in a supermarket is uniform.

Answer 1

The value of z for which P(\u2264 z) = 0.50 in a standard normal distribution is 0.00, corresponding to the mean of the distribution.

Step-by-step explanation:

The value of z for which P(\u2264 z) = 0.50 in a standard normal distribution (Z~N(0, 1)) is 0.00.

This is because the standard normal distribution is symmetrical around the mean, which is 0, and a probability of 0.50 corresponds to the mean of the distribution.

In other words, half of the values lie below the mean and half above it in a standard normal distribution. The correct answer to the question is option c) 0.00.