SOLUTION: Assume that IQ scores are normally distributed, with a standard deviation of 20 and a mean of 100 points. If 95 people are chosen at random what is the probability that the sample

Question 1179060: Assume that IQ scores are normally distributed, with a standard deviation of 20 and a mean of 100 points. If 95 people are chosen at random what is the probability that the sample mean of IQ scores will not differ from the population mean by more than 2 points? (Round answer to 4 decimal points)
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!


Hi 
Population: normally distributed, with a standard deviation of 20 and a mean of 100 points
Sample:  n = 95 
probability that the sample mean of IQ scores will not differ from the 
population mean by more than 2 points
Using TI or similarly an inexpensive calculator like an Casio fx-115 ES plus
P ( 98, 102, 100,20) =  .0797
Wish You the Best in your Studies.

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