is any type of relationship between the amount of an alumnus’s contribution (in dollars) and the years the alumnus has been out of school. The data follow. Years x | 1 5 3 10 7 6 Contribution y | 500 100 300 50 75 80 a) Plot the scatter diagram for the paired data. b) Assuming a 5% level of significance, use hypothesis testing and the linear correlation coefficient (r) to determine if there is a linear correlation. ( c) Find the equation of the regression line and plot it on your scatter diagram using an x of 3 and an x of 10. d) Determine the residual value for an x of
19. The director of an alumni association for a small college wants to determine whether there is any type of relationship between the amount of an alumnus’s contribution (in dollars) and the years the alumnus has been out of school. The data follow. Years x | 1 5 3 10 7 6 Contribution y | 500 100 300 50 75 80
a) Plot the
b) Assuming a 5% level of significance, use hypothesis testing and the linear
( c) Find the equation of the regression line and plot it on your scatter diagram using an x of 3 and an x of 10.
d) Determine the residual value for an x of 5 and explain its meaning.
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