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Check my work Check My Work button is now enabledItem 7Item 7 An agribusiness performed a...

Check my work Check My Work button is now enabledItem 7Item 7 An agribusiness performed a regression of wheat yield (bushels per acre) using observations on 20 test plots with four predictors (rainfall, fertilizer, soil acidity, hours of sun). The standard error was 1.13 bushels.

(a) Find the approximate width of a 95% prediction interval for wheat yield. (Round your answer to 2 decimal places.)

yˆi ±

(b) Find the approximate width using the quick rule. (Round your answer to 2 decimal places.)

yˆi ±

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