Extra credit: Earn 4 points extra credit The yield of a var…
Extra credit: Earn 4 points extra credit The yield of a variety of wheat was measured on a series of small plots and was found to be approximately normal. The 2nd and 98th percentile were found to be 29 bushels/acre and 41 bushels/acre respectively. The standard deviation (bushels/acre) is approximately what? Hint: Draw a sketch and mark the 2nd and 98th percentiles on the curve.