The file P02_02.xlsx contains information on over 200 movies that came out during 2006 and 2007. Run a regression of Total US Gross versus 7-day Gross, and then run a multiple regression of Total US Gross versus 7-day Gross and 14-day Gross. Report the 95% confidence interval for the coefficient of 7-day Gross in each equation. What exactly do these confidence intervals tell you about the effect of 7-day Gross on Total US Gross? Why are they not at all the same? What is the relevant population that this data set is a sample from?
Answer to relevant QuestionsThe file P10_10.xlsx contains data on 150 homes that were sold recently in a particular community. a. Find a table of correlations between all of the variables. Do the correlations between Price and each of the other ...Using the data given in P10_10.xlsx, estimate a multiple regression equation to predict the price of houses in a given community. Employ all available explanatory variables. Is there evidence of multicollinearity in this ...The file P02_35.xlsx contains data from a survey of 500 randomly selected households.a. In an effort to explain the variation in the size of the monthly home mortgage or rent payment, estimate a multiple regression equation ...Continuing Problem 6 with the data in the file P10_18.xlsx, refer to the original multiple regression model as the reduced equation. Suppose now that the antique collector believes that the rate of increase of the auction ...The file P10_05.xlsx contains salaries for a sample of DataCom employees, along with several variables that might be related to salary.a. Estimate an appropriate multiple regression equation to predict the annual salary of a ...
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