An agribusiness performed a regression of wheat yield (bushels per acre) using observations on 25 test plots with four predictors (rainfall, fertilizer, soil acidity, hours of sun). The standard error was 1.17 bushels. Find the approximate width of a 95 percent prediction interval for wheat yield, assuming that the predictor values for a test plot are near the means of the sample predictors. What results would the quick rule give Solution hope this helps. http://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=9100GWHX.txt.

1. An agribusiness performed a regression of wheat yield (bushels per acre) using observations on
25 test plots with four predictors (rainfall, fertilizer, soil acidity, hours of sun). The standard
error was 1.17 bushels. Find the approximate width of a 95 percent prediction interval for wheat
yield, assuming that the predictor values for a test plot are near the means of the sample
predictors.
What results would the quick rule give
Solution
hope this helps. http://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=9100GWHX.txt