Question

There are 12 numbers. Totals 79. 79/12=6.583. What will I need to do to get this problem?

Score: 0 of 1 pt 8 of 10 (5 complete) HW Score: 59.52%, 8.33 of 14 pts 7.2.17-T Question Help Assigned Media 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 90% confidence level. What do the results tell about the mean attractiveness ratings of the population of all adult females? 6, 7, 3, 8, 6, 5, 6, 9, 7, 8, 6, 8 What is the confidence interval for the population mean H? (Round to one decimal place as needed.)

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Answer 1

Given data, Sample size n=12 Sample data={6,7,3,8,6,5,6,9,7,8,6,8} From the sample data, Mean of given sample x = 2X; - 6+7+3+...+6+8 8 = 6.58 can resapan 12 Variance 52-(X;-1) = 2.6288 1-1 Standard deviation s= /variance = 1.6214 To find, 90% confidence level t-score at 11 degrees of freedom and at 0.10 level of significance t = 1.796 90% confidence interval for mean is as follows = (F-t* te = (6.58–1.796* *.6324, 6.58+1.796*6234) = (5.7394, 7.4206) Confidence interval is 5.7 <u<7.4