If X is a normal random variable with standard deviation 2.50, and if the probability that X is more than 5.95 is .1271 (as shown below), then what is the mean of X? (Note: the diagram is not necessarily to scale.)
A)5.8
B)5.0
C)4.7
D)3.1

Question

If X is a normal random variable with standard deviation 2.50, and if the probability that X is more than 5.95 is .1271 (as shown below), then what is the mean of X? (Note: the diagram is not necessarily to scale.) 
A)5.8 
B)5.0 
C)4.7 
D)3.1

Quizplus · Accepted Answer

The Answer of If X is a normal random variable with standard deviation 2.50, and if the probability that X is more than 5.95 is .1271 (as shown below), then what is the mean of X? (Note: the diagram is not necessarily to scale.) 
A)5.8 
B)5.0 
C)4.7 
D)3.1

If X Is a Normal Random Variable with Standard Deviation