X Is a Normally Distributed Random Variable with a Mean

question 58

Multiple Choice

X is a normally distributed random variable with a mean of 9.0 and a standard deviation of 3.00. Find the value x such that P(X < x) is equal to 0.86. (Note: the diagram is not necessarily to scale.)

• A) 12.24
• B) 10.47
• C) 13.95
• D) 9.00