Ten data points on Y and X are employed to estimate the parameters in the linear relation Y = a + bX. The computer output from the regression analysis is the following:

a. What is the equation of the sample regression line?b. Test the intercept and slope estimates for statistical significance at the 1 percent significance level. Explain how you performed this test, and present your results.c. Interpret the p-values for the parameter estimates.d. Test the overall equation for statistical significance at the 1 percent significance level. Explain how you performed this test, and present your results. Interpret the p-value for the F-statistic.e. If X equals 140, what is the fitted (or predicted) value of Y?f. What fraction of the total variation in Y is explained by the regression?

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DEPENDENT VARIABLE: Y R-SQUARE F-RATIO P-VALUE ONE OBSERVATIONS: 10 0.5223 8.747 0.0187 PARAMETER STANDARD VARIABLE ESTIMATE ERROR T-RATIO P-VALUE INTERCEPT 800.0 189.125 4.23 0.0029 -2.50 0.850 -2.94 0.0187