Question

E Question Help Psychologists at an university compared the levels of alcohol consumption of male and female freshman students. Each student was asked to estimate the amount of alcohol (beer, wine, or liquor) they consume in a typical week. Summary statistics for 125 males and 185 females are provided in the accompanying table. Click here to view the table. sit the follo a. For each gender, find a 95% confidence interval for mean weekly alcohol consumption For males, the 95% confidence interval is (Round to the nearest hundredth as needed.) ). For females, the 95% confidence interval is . . (Round to the nearest hundredth as needed.) b. Prior to sampling, what is the probability that at least one of the two confidence intervals will not contain the population mean it estimates. Assume that the two intervals are independent. Cancel The probability is (Round to four decimal places as needed.) Click to select your answer(s). Check for!

Answer 1

soy confidence internal (a) for moles, the 95% X = 1-0.95 0.05 tcca, n,-1) = tc (0.05,624) to 1.979 (I = x + tc * 13.54 = 16.77 + 1:979*- J 125 = 16.77 + 2.39667 = 14.37 , 19.17 Ang for females, The 95% confidence internal all t(0.05,184) = 1.973 1.973 * CI = 10.77 + = 10.77 + 1.6705 = 9.0975, 12:44 = 9.10, 12:44 A (b) pa 1 - (0.98 *0.95 ) = 1- 0.9025 0.0975 A CS Scanned with CamScanner