Question 1182689: In a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample of the results is listed below (1 = not attractive; 10 = extremely attractive). Construct a confidence interval using a 95% confidence level. What do the results tell about the mean attractiveness ratings of the population of all adult females?
6, 7, 1, 10, 4, 6, 7, 8, 7, 9, 5, 9
What is the confidence interval for the population mean μ?
__ < μ < __ (Round to one decimal place as needed.)
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! mean is 6.58
s is 2.47
half-interval is t(0.975,df=11)*s/sqrt(n)=2.201*2.47/sqrt(12)=1.57
the 95% CI is (5.01, 8.15) or (5.0, 8.2)
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