Annual per-capita consumption of all fresh fruits versus that of apples and grapes from 1998 through 2003 was as shown in the table.

a. Determine the multiple regression equation and interpret the partial regression coefficients.
b. What is the estimated per-capita consumption of all fresh fruits during a year when 17 pounds of apples and 6 pounds of grapes are consumed per person?
c. Determine the 95% prediction interval for per-capita consumption of fresh fruits during a year like the one described in part (b).
d. Determine the 95% confidence interval for mean percapita consumption of fresh fruits during years like the one described in part (b).
e. Determine the 95% confidence interval for the population partial regression coefficients, β1 and β2.
f. Interpret the significance tests in the computer printout.
g. Analyze the residuals. Does the analysis support the applicability of the multiple regression model to these data?

Transcribed Image Text:

y = All Fresh Fruits Year x1=Apples x2-Grapes 1998 128.9b/pero 19.0 lb/person 7.1 lb/person 1999 129.8 2000 128.0 2001 1257 2002 126.9 2003 126.7 18.7 17.6 15.8 16.2 16.7 8.1 7.4 7.7 8.7 7.5