Mathematics, 15.04.2021 21:00 rivera6681

The results of the grade 9 Math P. A.T are normally distributed about a mean of 62.4%. If approximately 28% of students score above 85%, determine the value of the standard deviation, correct to the nearest hundredth. PLEASE HELP

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The results of the grade 9 Math P. A.T are normally distributed about a mean of 62.4%. If approximat...