$X$ Is a Normally Distributed Random Variable with a Standard Deviation

Multiple Choice

$X$ is a normally distributed random variable with a standard deviation of $3.50$ . Find the mean of $X$ when $64.8 \%$ of the area lies to the left of $5.33$ . (Note: the diagram is not necessarily to scale.)

A) 3.7
B) 2.1
C) 4.0
D) 5.2