Power plant pollution: Using the data in Exercise 10, perform the Tukey—Kramer test to determine which pairs of means, if any, differ. Use the a = 0.05 level of significance.
Answer to relevant QuestionsThree brands of tires were tested on each of four makes of car. Three cars of each make were used. The number of miles traveled, in thousands, is given as follows for each car. a. Can you reject the hypothesis of no ...The scientists referred to in Exercise 1 also considered the effect of gypsum on the electrical conductivity of soil. Two types of soil were treated with three different amounts of gypsum. The results are as follows. a. Can ...One-way analysis of variance requires the assumption that the populations are approximately normal. However, if the sample sizes are large (n > 30), this assumption is not so important. Why is this so? A machine that fills beverage cans is supposed to put 12 ounces of beverage in each can. Following are the amounts measured in a sample of 14 cans. Can you conclude that the median amount differs from 12 ounces? Use the a + ...Would it be possible to use the number of times the more frequent sign appears as the test statistic for the sign test? Explain why you would reject the null hypothesis when the value of this test statistic is greater than a ...
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