Respuesta :

prestonshelton
Hello!

The mean is 86 and the standard deviation is 3

You see how many deviations are between 86 and 89

86 + 3 = 89

From the median to the first deviation is where 34.1% of the results fall

Convert the percent to a decimal

34.1% = 0.341

Multiply this by the amount of test taken

200*0.341 = 68.2

The answer is B)68

Hope this helps!

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