An agribusiness performed a regression of wheat yield (bushels per acre) using observations on 21 test plots with four predictors (rainfall, fertilizer, soil acidity, hours of sun). The standard error was 1.02 bushels. (a) Find the approximate width of a 95% prediction interval for wheat yield. (Round your answer to 2 decimal places.) & Answer is complete but not entirely correct. 2.31 (b) Find the approximate width using the quick rule. (Round your answer to 2 decimal places.) 9 ± Answer is complete and correct. 2.04
An agribusiness performed a regression of wheat yield (bushels per acre) using observations on 21 test plots with four predictors (rainfall, fertilizer, soil acidity, hours of sun). The standard error was 1.02 bushels. (a) Find the approximate width of a 95% prediction interval for wheat yield. (Round your answer to 2 decimal places.) & Answer is complete but not entirely correct. 2.31 (b) Find the approximate width using the quick rule. (Round your answer to 2 decimal places.) 9 ± Answer is complete and correct. 2.04
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.6: Regression And Median-fit Lines
Problem 6PPS
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An agribusiness performed a regression of wheat yield (bushels per acre) using observations on 21 test plots with four predictors (rainfall, fertilizer, soil acidity, hours of sun). The standard error was 1.02 bushels.
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