Suppose that a third group of nurses was observed along with groups I and II of Exercise 9.2-1, resulting in the respective frequencies 130, 75, 136, 33, 61, and 65. Test H0: pi1 = pi2 = pi3, i = 1, 2, . . . , 6, at the α = 0.025 significance level.
Answer to relevant QuestionsAn insurance company looks at its auto insurance customers and finds that (a) all insure at least one car, (b) 85% insure more than one car, (c) 23% insure a sports car, and (d) 17% insure more than one car, including a ...Suppose that a third class (W) of 15 students was observed along with classes U and V of Exercise 9.2-3, resulting in scores of Again, use a chi-square test with α = 0.05 to test the equality of the three distributions by ...Ledolter and Hogg (see References) report the comparison of three workers with different experience who manufacture brake wheels for a magnetic brake. Worker A has four years of experience, worker B has seven years, and ...With a = 3 and b = 4, find μ, αi, βj, and γij if μij, i = 1, 2, 3 and j = 1, 2, 3, 4, are given by Note the difference between the layout here and that in Exercise 9.4-2. Does the interaction help explain the ...In sampling from a bivariate normal distribution, it is true that the sample correlation coefficient R has an approximate normal distribution N[ρ, (1 − ρ2)2/n] if the sample size n is large. Since, for large n, R is ...
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