Z is a standard normal random variable. The P (1.20 Z 1.85) equals
A)0.4678
B)0.3849
C)0.8527
D)0.0829

Name: Z is a standard normal random variable. The P (1.20 Z 1.85) equals A)0.4678 B)0.3849 C)0.8527 D)0.0829
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Question

Z is a standard normal random variable. The P (1.20   Z  1.85) equals
A)0.4678 
B)0.3849 
C)0.8527 
D)0.0829

Quizplus · Accepted Answer

Using the standard normal distribution table, we can find the probabilities as follows:
P(Z < 1.20) = 0.8849
P(Z < 1.85) = 0.9678
Therefore, P(1.20 < Z < 1.85) = P(Z < 1.85) - P(Z < 1.20) = 0.9678 - 0.8849 = 0.0829
Hence, the correct answer is D.

Z Is a Standard Normal Random Variable