# Where did the 0.7475 come from? I'm assuming the answer is 0.2525. Step1 of iven that...

###### Question:

where did the 0.7475 come from? I'm assuming the answer is 0.2525.

Step1 of iven that the intelligence quotient test is normally distributed with the mean of 100 and standard de s X N(100, 15) pute the probability that the IQ test score higher than 110, That is, P(X > 110) n(X-μ 110-100 -P(>0.666) -1-P(Z s0.6667) = 1-0.7475 = 0.2525

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