As HOMEWORKLIB answering guideline I have answered only te first four subparts
I have used minitab software
Steps
minitab out put
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a)
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b)
option C
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c)
From the regression equation we can see that the slope is negetive
here a negetive relationsip exists between price and age
Price tends to decreas as age increases.
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d)
Age is independent variable and price is dependent variable.
So, Price is response variable and age is predictor variable.
option D
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