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I have a sample of 31 7th grade girls who took an IQ test. I calculated...

I have a sample of 31 7th grade girls who took an IQ test. I calculated the sample mean to be 105.84 and assume the population standard deviation to be 14.27. Calculate a 90% CI for the mean

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Answer #1

Confidence Interval :-



Lower Limit =
Lower Limit = 101.6243
Upper Limit =
Upper Limit = 110.0557


90% Confidence interval is ( 101.6243 , 110.0557 )


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