Question
In: Statistics and Probability
IQ scores are known to be normally distributed. The mean IQ score is 100 and the...
IQ scores are known to be normally distributed. The mean IQ score is 100 and the standard deviation is 15. What percent of the population has an IQ between 85 and 105. Need to solve it through Excel
Solutions
Expert Solution
Using Excel,
=NORM.DIST(105,100,15,TRUE)-NORM.DIST(85,100,15,TRUE)
=0.4719
orchestra answered 1 year agoRelated Solutions
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Critical Values
Z0.05=
1.645
Z0.025=1.96
Z0.01=2.325
Z0.005=2.575
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