If X Is a Normal Random Variable with Mean 6 $\mathrm { P } ( Z < \mathrm { x } )$

question 73

Multiple Choice

If X is a normal random variable with mean 6 and standard deviation 3.0, then find the value x such that $\mathrm { P } ( Z < \mathrm { x } )$ is equal to .86, as shown below. (Note: the diagram is not necessarily to scale.)

• A) 9.24
• B) 7.32
• C) 6.66
• D) 6.00

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