Use the data and the regression given in question 19 to forecast the number of bushels of

Question:

Use the data and the regression given in question 19 to forecast the number of bushels of wheat that will be harvested if 250 lb of fertilizer are used. Construct a 90 % and a 99 % confidence belt for the regression line. For which interval is the confidence belt wider? Explain.

Question 19

Ralph Farmer of the Department of Agriculture is interested in the relationship between the amount of fertilizer used and the number of bushels of wheat harvested. He collects the following information on six farmers.image text in transcribed

Use MINITAB to do the following:

(a) Draw a scatter diagram for the data.

(b) Estimate the regression parameters for a and b.

(c) Calculate the standard error of the estimate and the standard error of the coefficient b.

(d) Calculate the t-value for the coefficient of b.

(e) If 210 lb of fertilizer is used, what amount of wheat can be expected to be harvested? What is the 95 % confidence interval?

Step by Step Answer:

Related Book For  book-img-for-question

Statistics For Business And Financial Economics

ISBN: 9781461458975

3rd Edition

Authors: Cheng Few Lee , John C Lee , Alice C Lee

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