Mathematics, 05.05.2020 10:49 sayedabdullah

Trevor thinks that left-handed pitchers in a baseball league are more likely to strike out batters than right-handed pitchers are. He's considering each "at-bat" as an opportunity for a strikeout. He takes a random sample of at-bats where the pitcher was left-handed, and he records the proportion of those at-bats that result in a strikeout. He repeats this process for at-bats with right-handed pitchers. He wants to use the results to test if the proportion of at-bats resulting in a strikeout is significantly higher for left-handed pitchers. Which of the following is an appropriate set of hypotheses for Trevor'?
A. H0: PR - PL = 0
Ha: PR - PL > 0
B. H0: PL - PR = 0
Ha: PL - PR < 0
C. H0: PM - PR = 0
Ha: PL - PR > 0
D. H0: PR - PL = 0
Ha: PR - PL not equal to 0

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Trevor thinks that left-handed pitchers in a baseball league are more likely to strike out batters t...