Find the least squares prediction equation for weight change

Reference no: EM131403124

Snow geese feeding trial. Refer to the Journal of Applied Ecology (Vol. 32, 1995) study of the feeding habits of baby snow geese, Exercise. The data on gosling weight change, digestion efficiency, acid-detergent fiber (all measured as percentages) and diet (plants or duck chow) for 42 feeding trials are saved in the SNOWGEESE file. (The table shows selected observations.) The botanists were interested in predicting weight change (y) as a function of the other variables. The first-order model E(y) = β₀ + β₁x₁ + β₂x₂, where x₁ is digestion efficiency and x2 is acid-detergent fiber, was fit to the data. The MINITAB printout is given below.

(a) Find the least squares prediction equation for weight change, y.

(b) Interpret the β-estimates in the equation, part a.

(d) Find and interpret the values of R₂ and R₂ a. Which is the preferred measure of model fit?

(e) Conduct a test to determine if digestion efficiency, x₁, is a useful linear predictor of weight change. Use α = .01.

(f) Form a 99% confidence interval for β₂. Interpret the result.

280_Table 8.jpg

Reference no: EM131403124

Questions Cloud

Determine if project is a good idea in a present value sense : Use the T1MEVAL program to determine if the project is a good idea in a present value sense. That is, does the present value of expected cash inflows exceed the value of the investment that has to be made today?

Fit the model to the data using the method of least squares : Write a first-order model for arsenic level (y) as a function of latitude, longitude, and depth.- Fit the model to the data using the method of least squares.

Compute real gdp for each year : Compute the percentage change in nominal and real GDP from 1988 to 1998, and from 1998 to 2008. c. Compute the percentage change in the GDP deflator over these two periods.

State the null and alternative hypotheses : BUS105e Statistics Assignment - Group-based Assignment. Select an appropriate test of hypothesis to determine if the mean on-time arrival rate is different between the two lines. State the null and alternative hypotheses and explain how you develop t..

Find the least squares prediction equation for weight change : Find the least squares prediction equation for weight change, y.- Interpret the β-estimates in the equation, part a.

Explain difference between final goods and intermediate good : Explain the difference between final goods and intermediate goods. Why is it sometimes difficult to apply this distinction in practice? In this regard, why is the concept of value added useful?

Find a confidence interval for and interpret the result : Give the least squares prediction equation for the interstate highway model.- Give practical interpretations of the β estimates, part a.

Calculate the price variance for direct materials used : Calculate the price variance for direct materials used to make a product. Calculate the direct materials variance and determine if it is favorable or unfavorable.

What are the consequences of such a shift : Comment on the following statement: "Inflationary and recessionary gaps are nothing to worry about because the economy has a built-in mechanism that cures either type of gap automatically."

User Account

All Pages