Answer the following questions using the data from Problem 14.69: a. Calculate the coefficient of determination. b.

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Answer the following questions using the data from Problem 14.69:

a. Calculate the coefficient of determination.

b. Using a = 0.05, test the significance of the population coefficient of determination.

c. Construct a 95% confidence interval for the average grade of students who missed two classes.

d. Construct a 95% prediction interval for the grade of a student who missed two classes.

e. Verify your results from parts c and d with PHStat.

AppendixLO1

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Business Statistics

ISBN: 9780133852288

2nd Edition

Authors: Robert A Donnelly, Robert Donnelly Jr

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