Z is a standard normal random variable. The P -1.20 ≤ Z ≤ 1.50) equals
A) 0.0483
B) 0.3849
C) 0.4332
D) 0.8181

Name: Z is a standard normal random variable. The P -1.20 ≤ Z ≤ 1.50) equals A) 0.0483 B) 0.3849 C) 0.4332 D) 0.8181
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Question

Quizplus · Accepted Answer

The probability P(-1.20 ≤ Z ≤ 1.50) is found by looking up the standard normal distribution table or using a calculator. It is the difference between P(Z ≤ 1.50) and P(Z ≤ -1.20), which equals 0.8181.

Z Is a Standard Normal Random Variable