Use the data in the accompanying table. The data come from a study of ice cream consumption that spanned the springs and summers of three years. The ice cream consumption is in liters per capita per week, price of the ice cream is in dollars, family income of consumers is in dollars per week, and temperature is in degrees Celsius.

a. Use a 0.05 significance level to test for a linear correlation between consumption and income.
b. Find the equation of the regression line that expresses consumption (y) in terms of income (x).
c. What is the best predicted consumption amount if the income is $562?

Consumption 0.219 0.212 0.223 0.241 0.231 0.195 0.186 0.164 0.153 0.145 2.43 568 16 Price 2.38 2.48 2.36 2.34 2.45 2.45 2.46 2.39 2.31 562 17 Incone 540 548 554 527 540 548 527 548 Temperature 5 13 20 21 18 Based on data from Kadiyala, Econometrica, Vol. 38