Please help me on question (a),(b),(c)and (d)please underline or mark the answer
ID: 3358839 • Letter: P
Question
Please help me on question (a),(b),(c)and (d)please underline or mark the answer to make it clear, and please make sure the answer is right before you post it, if you r not 100% sure about your answer, just let some one else do it , thanks a lot
One desirable dietary change if you want to "eat right," is to reduce the intake of red meat and to substitute poultry or fish. Researchers tracked beef and chicken consumption, y (in annual pounds per person), and found the consumption of beef declinir the consumption of chicken increasing over a period of 7 years. A summary of their data is shown in the table. 85 Year Beef Chicken 1 85 37 37 2 89 36 3 76 47 4 76 47 5 6862 6 67 74 74 7 60 79 Consider fitting the following model, which allows for simultaneously fitting two simple linear regression lines: E(Y) = Bo + B1X1 + B2x2 + B3X1X2 where y is the annual meat (either beef or chicken) consumption per person per year, S1 if beef and x2 = Year. 67 X1 = 0 if chickenExplanation / Answer
Result:
a).
R square =95.4%
95.4% variation in y is explained by the model. There is no violation of assumptions.
The model is a good fit.
b).
beef : y predicted=56.2
chicken: y predicted=85.6
c).
56.29
The vales are very different,. The difference between fit values is more than 0.01.
d).
95% CI= (48.44, 64.13).
95% PI= (44.13, 68.44).