(4) The director of the county highway department would also like to add the variable to the regression model. The dat
Posted: Wed May 11, 2022 4:12 pm
(4) The director of the county highway department would
also like to add the variable to the regression
model. The data from Problem3 and
this new variable are shown in the
spreadsheet Problem4. The regression
model was fit and its output is also displayed
in Problem4.
(a) What hypotheses should be tested if we want to
see if number-of-years-since-the-last-resurfacing belongs in the
model? (6 pts)
(b) Compute and label a test statistic using the extra sums
of squares approach for your hypotheses in part
(a). (5 pts)
(c) Determine the p-value for your test statistic in part
(b). (5 pts)
(d) Using α = .05, what is your conclusion for
your hypothesis test? (3 pts)
also like to add the variable to the regression
model. The data from Problem3 and
this new variable are shown in the
spreadsheet Problem4. The regression
model was fit and its output is also displayed
in Problem4.
(a) What hypotheses should be tested if we want to
see if number-of-years-since-the-last-resurfacing belongs in the
model? (6 pts)
(b) Compute and label a test statistic using the extra sums
of squares approach for your hypotheses in part
(a). (5 pts)
(c) Determine the p-value for your test statistic in part
(b). (5 pts)
(d) Using α = .05, what is your conclusion for
your hypothesis test? (3 pts)