Scores on a Test Have a Mean of 70 And Q

Multiple Choice

Scores on a test have a mean of 70 and $Q _ { 3 }$ is 83 . The scores have a distribution that is approximately normal. Find $P _ { 90 }$ . (You will need to first find the standard deviation.)

A) $92.9$
B) $93.7$
C) $95.6$
D) $94.8$