If X is a normal random variable with standard deviation 3.00, and if the probability that X is less than 7.64 is .648 (as shown below), then what is the mean of X? (Note: the diagram is not necessarily to scale.)
A)5.6
B)6.0
C)6.2
D)6.5

Question

If X is a normal random variable with standard deviation 3.00, and if the probability that X is less than 7.64 is .648 (as shown below), then what is the mean of X? (Note: the diagram is not necessarily to scale.) 
A)5.6 
B)6.0 
C)6.2 
D)6.5

Quizplus · Accepted Answer

The Answer of If X is a normal random variable with standard deviation 3.00, and if the probability that X is less than 7.64 is .648 (as shown below), then what is the mean of X? (Note: the diagram is not necessarily to scale.) 
A)5.6 
B)6.0 
C)6.2 
D)6.5

If X Is a Normal Random Variable with Standard Deviation