Question 370712
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Hi,
*Note: {{{z = (x - mu)/sigma}}}
z = 78-60/7 = 2.571  NORMSDIST(2.571)  = .99493
z = 45-60/7 = -2.143 NORMSDIST(-2.143) = .01606
.99493 - .01606 = 97.89 % of the scores will be between 45 and 78