One assumption for the two-sample t-test is that the “sampled populations are to be normally distributed.” What happens when they are not normally distributed? Repeat Exercise 10. 79 using two theoretical populations that are not normal and using samples of size 10. The exponential distribution uses a continuous random variable, it has a J-shaped distribution, and its mean and standard deviation are the same value. Use two exponential distributions with means of 50 and 80: Exp(50) and Exp(80). Check all three properties of the sampling distribution: normality, its mean value, and its standard error. Describe in detail what you discover. Do you think we should be concerned when sampling nonnormal populations? Explain.
Answer to relevant QuestionsOnly 75 of the 250 people interviewed were able to name the vice president of the United States. Find the values for x, n, p, and q. Find the 95% confidence interval for p A = p B. Find the values of pp and qp for these samples: Determine the critical value and critical region that would be used in the classical approach to test the null hypothesis for each of the following multinomial experiments. a. Ho: P(1) = P(2) = P(3) = P(4) = 0.25, with a = ...A large supermarket carries four qualities of ground beef. Customers are believed to purchase these four varieties with probabilities of 0.10, 0.30, 0.35, and 0.25, respectively, from the least to most expensive variety. A ...
Post your question