The director of graduate studies at a large college of business would like to predict the grade
Question:
a. Construct a scatter plot and, assuming a linear relationship, use the least-squares method to compute the regression coefficients b0 and b1.
b. Interpret the meaning of the Y intercept, b0, and the slope, b1, in this problem.
c. Use the prediction line developed in (a) to predict the GPA for a student with a GMAT score of 600.
d. Determine the coefficient of determination, r2, and interpret its meaning in this problem.
e. Perform a residual analysis on your results and evaluate the regression assumptions.
f. At the 0.05 level of significance, is there evidence of a linear relationship between GMAT score and GPA?
g. Construct a 95% confidence interval estimate of the mean GPA of students with a GMAT score of 600 and a 95% prediction interval of the GPA for a particular student with a GMAT score of 600.
h. Construct a 95% confidence interval estimate of the population slope.
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a b 0 030 b 1 000487 b 030 is the portion of estimated mean GPI index GPA that is ...View the full answer
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Related Book For 
Basic Business Statistics Concepts And Applications
ISBN: 9780132168380
12th Edition
Authors: Mark L. Berenson, David M. Levine, Timothy C. Krehbiel
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