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l) Find a 99% confidence interval for the partial slope of the population regression line pertaining to the independent variable camera body. Provide an explanation

l) Find a 99% confidence interval for the partial slope of the population regression line pertaining to the independent variable camera body. Provide an explanation of the meaning of this interval in the context of the problem. Show how this interval can be used to answer the question posed (at the 1% level of significance) in part j) of the problem.

m) Find a 99% confidence interval for the partial slope of the population regression line pertaining to the independent variable price of lens. Provide an explanation of the meaning of this interval in the context of the problem. Show how this interval can be used to answer the question posed (at the 1% level of significance) in part k) of the problem.

n) Find the variance inflationary factor for this model. Use it to draw a conclusion as to whether there is the existence of a significant amount of collinearlity in this model. Justify your answer.

Sales of Body Price of Lens Gender Sales of Lens
155 $700 1 122
101 650 1 120
157 725 0 135
180 575 1 95
150 600 0 100
201 750 0 174
99 560 1 118
137 500 0 130
155 675 1 128
165 550 1 166
152 725 0 131
127 750 1 102
217 565 0 165
186 670 0 154
176 600 1 97
123 585 0 129
109 645 0 98
90 575 1 105
176 660 0 120
129 650 1 105

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