Earned run average A baseball pitchers earned run average
Chapter 12, Problem 40(choose chapter or problem)
Earned run average A baseball pitchers earned run average (ERA) is A1e, i2 = 9e>i, where e is the number of earned runs given up by the pitcher and i is the number of innings pitched. Good pitchers have low ERAs. Assume that e 0 and i 7 0 are real numbers. a. The single-season major league record for the lowest ERA was set by Dutch Leonard of the Detroit Tigers in 1914. During that season, Dutch pitched a total of 224 innings and gave up just 24 earned runs. What was his ERA? b. Determine the ERA of a relief pitcher who gives up 4 earned runs in one-third of an inning. c. Graph the level curve A1e, i2 = 3 and describe the relationship between e and i in this case.
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