Question

Help & explain please

Regression 1. A researcher is willing to investigate whether there is any linear relation bet ween income (x) in thousand dollars and food expenditures (y) in hundred dollars. A sample data on 7 households given the table below was collected. Assuming that a linear model is used to solve the problem. r-3-D) r-I 83 24 13 61 15 17 1. Write down the linear model 2. Write down the fitted regression line and Interpret the slope of this regression line. 3. What would be the expected food expenditures of an individual making about 55,000 dollars. Can we predict that of an individual making 95,000 dollars? why? 4. If somebody were to expend 1300 dollars, what would his earning income be? 2. In Brain and Beharior evolution (April 2000), Zoologists conducted a study of the feeding behavior of black-bream fish. The Zoologists recorded the number of aggressive strikes of black-bream fish feeding at the bottom of an aquarium in the 10-minute period following the addition of food. The next table lists the weekly number of strikes and age of the fish (in days). Assume that the line would be appropriate to fit this data. Week Number of Strikes Age of the fish (days) 136 150 155 162 169 178 184 190 34 35 57 12 15 (a) Write down the simple linear regression model that relates the number of strikes(t) to the age of the fish (x).

Answer 1