During the fall harvest season in the United States, pumpkins are sold in large quantities at farm
Question:
a. Assuming a linear relationship, use the least-squares method to compute the regression coefficients b0 and b1.
b. Interpret the meaning of the slope, b1, in this problem.
c. Predict the weight for a pumpkin that is 60 centimeters in circumference.
d. Do you think it is a good idea for the farmer to sell pumpkins by circumference instead of weight? Explain.
e. Determine the coefficient of determination, r2, and interpret its meaning.
f. Perform a residual analysis for these data and evaluate the regression assumptions.
g. At the 0.05 level of significance, is there evidence of a linear relationship between the circumference and weight of a pumpkin?
h. Construct a 95% confidence interval estimate of the population slope, β1.
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Related Book For
Statistics For Managers Using Microsoft Excel
ISBN: 772
7th Edition
Authors: David M. Levine, David F. Stephan, Kathryn A. Szabat
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