Research and Statistical Analysis of Data:

This study is to find a relationship between in-state tuition and percentage of faculty members with PhDs.For this study, a regression was run using a data set of U.S. colleges from years gone by.In-state tuition is in dollars ($).Following is the regression output.

Model Summary:

Model R R-Squared Adjusted R-Squared Std. Error of the Estimate

1 0.613 0.375 0.371 55.5495

Coefficients:

Model Unstandardized Coefficients Standardized Coefficients t Sig. (P-value)

B Std. Error Beta

(Constant) 316.7 18.764 16.878 .000

Percentage of faculty

with Ph.D.degrees. 2.419 0.244 0.613 9.893 .000

Part 1 Question

Interpret the coefficient of "Percentage of faculty withPh.D.degrees."

Part 2 Question

Interpret the statistical significance tests (P-value) associated with "Percentage of faculty withPh.D.degrees."State the null and alternative hypotheses.

Part 3 Question

Discuss the practical significance (R-squared and P-value) of the coefficient of "Percentage of faculty withPh.D.degrees."