SOLUTION: 1. The mean IQ score of a sample of 59 students selected from a high school is 96. Suppose the standard deviation of IQ's at this school is 7.8. What will be the 95% confidence in
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Question 1159424: 1. The mean IQ score of a sample of 59 students selected from a high school is 96. Suppose the standard deviation of IQ's at this school is 7.8. What will be the 95% confidence interval for the mean IQ?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
half-interval is z(0.975)*sigma/sqrt(n) for 95% CI
this is 1.96*7.8/sqrt(59)
=1.99
the 95% interval adds and subtracts that from the sample mean
(94.01, 97.99)
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