On a Recent English Exam,scores Averaged 77 Points

question 69

Multiple Choice

On a recent English exam,scores averaged 77 points.If 2% of scores fell above 95 points,find an approximate standard deviation (assuming the Normal model is appropriate) .

• A)1.9
• B)83.50
• C)8.78
• D)-8.78
• E)1.54

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