Question

Given below are seven observations collected in a regression study on two variables, x (independent variable) and y (dependent variable).

xy
212
39
68
77
86
75
92

a. Develop the least squares estimated regression equation.
b. At 95% confidence, perform a ttest and determine whether or not the slope is significantly different from zero.
c. Perform an Ftest to determine whether or not the model is significant. Let = 0.05.
d. Compute the coefficient of determination.

Answer

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