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A multiple regression analysis of 73 cases was performed with 5 explanatory variables. Suppose that SSM = 14.1 and SSE = 100.5.
(a) Find the value of the F statistic for testing the null hypothesis that the coef?cients of all of the explanatory variables are zero.
(b) What are the degrees of freedom for this statistic?
(c) Find bounds on the P-value using Table E. Show your work.
(d) What proportion of the variation in the response variable is explained by the explanatory variables?
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An Excel Spreadsheet is reprinted below. Interpret the t-test results. Are they statistically significant?
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In a test of the MicroSort method of gender selection, 51 babies are born to couples trying to have baby boys, and 39 of those babies are boys (based on data from the Genetics & IVF Institute).
Create the 90% confidence interval for mean score of all such subjects. You may suppose scores are usually distributed.
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How did you think that your sample would compare to the national mean? This is your hypothesis. State either the alternate or null hypothesis and identify which one you are stating.
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