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Scores on a Test Have a Mean of 73 And Q

Question 167

Multiple Choice

Scores on a test have a mean of 73 and Q3Q _ { 3 } is 80. The scores have a distribution that is approximately normal.
Find P90. (You will need to first find the standard deviation.)


A) 86.4
B) 85.7
C) 86.8
D) 85.3

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