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Scores on a test have a mean of 71.1 and 7 percent of the scores are...

Scores on a test have a mean of 71.1 and 7 percent of the scores are above 88. The scores have a distribution that is approximately normal. Find the standard deviation. Round your answer to the nearest tenth, if necessary.

math   Statistics-And-Probability   
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Answer #1

e MB 71-1 PCX788) - 0.07 to test score 1- P(7 388) -0.07 *; P(x<PP) = 0.93. Plz< 8874.) >0.93 + $( 0.9)= 0.93 7 16.9 = $7(0.

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