Scores on a Test Have a Mean of 70 And Q

question 9

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) \(94.8\)

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