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) $94.8$

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The Answer of 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) $94.8$

Scores on a Test Have a Mean of 70 And Q