1. Speed dating. Data set "Speed Dating" includes "attractiveness" ratings of male dates made by the female participants in speed dating session. The summary statistics aren = 199, x = 6. 19, s = 1.99 a) Use a 0.01 significance level to test the claim that the population mean of "attractiveness" ratings of male dates made by the female dates is less than 7.00. Hypotheses: Но: На: Test Statistic: X - µ T = S df = SE = a = SE p-value: Decision: Conclusion: b) Calculate a 99% confidence interval appropriate for the population mean of "attractiveness" ratings of male dates made by the female dates less than 7.00 C.I. = x + tdf · SE taf Interpretation:

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