An educator is considering two different videotapes for use in a half-day session designed to introduce students to the basics of economics. Students have been randomly assigned to two groups, and they all take the same written examination after viewing the videotape. The scores are summarized here. Assuming normal populations with equal standard deviations, does it appear that the two videotapes could be equally effective? What is the most accurate statement that could be made about the p-value for the test?
Answer to relevant QuestionsIn two independent samples, x-bar1 = 125.0, s1 = 21.5, n1 = 40, and x-bar2 = 116.4, s2 = 10.8, n2 = 35. Using the 0.025 level of significance, test H0: μ1 ≤ μ2 versus H1: μ1 > μ2. According to a national Gallup poll, men visit the doctor’s office an average of 3.8 times per year, while women visit an average of 5.8 times per year. In a similar poll conducted in a Midwest county, a sample of 50 men ...For the following independent random samples, use the z-test and the 0.01 level of significance in testing H0: μ1 = μ2 versus H1: μ1 ≠ μ2. An ambulance service located at the edge of town is responsible for serving a large office building in the downtown area. Testing different routes for getting from the ambulance station to the office building, a driver finds ...For a special pre–New Year’s Eve show, a radio station personality has invited a small panel of prominent local citizens to help demonstrate to listeners the adverse effect of alcohol on reaction time. The reaction times ...
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