Calculate Mean of a Probability Distribution And Standard Normal Variable


1.    Given that Z is a standard normal random variable, P(-1.0 < Z < 1.5) is

A. 0.9332    
B. 0.0919    
C. 0.7745    
D. 0.8413    

2.    The mean of a probability distribution can be:

A. a positive number    
B. a negative number    
C. zero    
D. all of the above    

These multiple choice questions belong to Statistics. The 1st question is about standard normal variable and the 2nd question is about the mean of a probability distribution.

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