A study of the effect of the gender of the tester on sex-role differentiation scores 16 in Manhattan gave a random sample of preschool children the Occupational Preference Test. Children were asked to give three choices of what they wanted to be when they grew up. Each occupation was rated on a scale from l (traditionally feminine) to 5 (traditionally masculine), and a child’s score was the mean of the three selections. When the tester was male, the 50 girls had x = 2.9 ands = 1.4, whereas when the tester was female, the 90 girls had x = 3.2 and s = 1.2. Show all steps of a test of the hypothesis that the population mean is the same for female and male testers, against the alternative that they differ. Report the P-value and interpret.
Answer to relevant QuestionsA recent General Social Survey asked, “How many days in the past seven days have you felt sad?” Software comparing results for men and women who responded showed the following results. T-Test of difference = 0 (vs not ...Refer to Example 10 on whether arthroscopic surgery is better than placebo. The following table shows the pain scores one year after surgery. Using software (such as MINITAB) that can conduct analyses using summary ...The U.S. Department of Justice (www.ojp.usdoj.gov/bjs) gives incarceration rates in the nation’s prisons for various groups. a. In 2006, the incarceration rate was 1 per 109 male residents and 1 per 1563 female residents. ...In pro basketball games during 1980–1982, when Larry Bird of the Boston Celtics missed his first free throw, 48 out of 53 times he made the second one, and when he made his first free throw, 251 out of 285 times he made ...Karl Pearson devised the chi-squared goodness-of-fit test partly to analyze data from an experiment to analyze whether a particular roulette wheel in Monte Carlo was fair, in the sense that each outcome was equally likely in ...
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