What is the size of effect in comparing your 25 students IQ to UNM students IQ in general?

What is the confidence interval for the mean IQ of your 25 students

You notice that the class you are teaching seems unusually bright. To find outwhether your current class is more intelligent than students on average in UNM, you give your 25 students an IQ test one day, and you find their mean IQ score=130. You were also told by the UNM Registrar that each year the intelligence of UNM students is estimated from their admission test scores, and the mean estimated IQ score for all 25000+ students was IQ=120 with a standard deviation of 10.

(a) What is the confidence interval for the mean IQ of your 25 students? (b) What is the size of effect in comparing your 25 students IQ to UNM students IQ in general?

 

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