If X is a normal random variable with mean 5, and if the probability that X is more than 4.08 is .5910 (as shown below), then what is the standard deviation of X? (Note: the diagram is not necessarily to scale.)

A) 4.00
B) 2.67
C) 2.00
D) 1.00

Question

If X is a normal random variable with mean 5, and if the probability that X is more than 4.08 is .5910 (as shown below) , then what is the standard deviation of X? (Note: the diagram is not necessarily to scale.)

A) 4.00 
B) 2.67 
C) 2.00 
D) 1.00

Quizplus · Accepted Answer

The Answer of If X is a normal random variable with mean 5, and if the probability that X is more than 4.08 is .5910 (as shown below), then what is the standard deviation of X? (Note: the diagram is not necessarily to scale.)

A) 4.00 
B) 2.67 
C) 2.00 
D) 1.00

If X Is a Normal Random Variable with Mean 5