Sales of People magazine are compared over a 5-week period at four Borders outlets in Chicago. Do the data show a significant difference in mean weekly sales?
Answer to relevant QuestionsConsider a one-factor ANOVA with n1 = 9, n2 = 10, n3 = 7, n4 = 8. (a) How many possible comparisons of means are there? (b) State the degrees of freedom for Tukey's T. (c) Find the critical value of Tukey's T for α = .05. The regression equation HomePrice = 51.3 + 2.61 Income was estimated from a sample of 34 cities in the eastern United States. Both variables are in thousands of dollars. HomePrice is the median selling price of homes in the ...College Students Weekly Earnings in Dollars (n = 5) (a) Make an Excel scatter plot. What does it suggest about the population correlation between X and Y? (b) Make an Excel worksheet to calculate SSxx, SSyy, and SSxy. Use ...Below is a regression using X = home price (000), Y = annual taxes (000), n = 20 homes. (a) Write the fitted regression equation. (b) Write the formula for each t statistic and verify the t statistics shown below. (c) State ...Review the two residual plots below. Do either of these show evidence that the regression error assumptions of normality and constant variation have been violated? Explain.
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