(a) Estimate the variances in 19 through 22. (b) Determine
Chapter , Problem 23(choose chapter or problem)
(a) Estimate the variances in 19 through 22. (b) Determine a 95 percent confidence interval for the variance in the data relating to lung cancer. (c) Break up the lung cancer data into two parts the first corresponding to states whose average cigarette consumption is less than 2,300, and the second greater. Assume a linear regression model for both sets of data. How would you test the hypothesis that the variance of a response is the same for both sets? (d) Do the test in part (c) at the .05 level of significance.
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