Age The correlation between Total Yearly Purchases and Age is r = 0.037. Summary statistics for the two variables are: Mean SD 29.67 yr 8.51 yr Age Total Yearly Purchase $572.52 $253.62 a) What is the linear regression equation for predicting Total Yearly Purchase from Age? b) Do the assumptions and conditions for regression appear to be met? c) What is the predicted Total Yearly Purchase for an 18-year-old? For a 50-year-old?

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A: From the given data, it looks like there is a significant main effect of the brand of food.