Little League product testing. Ads for a Little League instructional video claimed that the techniques would improve

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Little League product testing. Ads for a Little League instructional video claimed that the techniques would improve the performances of Little League pitchers. To test this claim, 20 Little Leaguers threw 50 pitches each, and we recorded the number of strikes. After the players participated in the training program, we repeated the test. The following table shows the number of strikes each player threw before and after the training. A test of paired differences failed to show that this training was effective in improving a player’s ability to throw strikes. Is there any evidence that the Effectiveness 1After - Before2 of the video depends on the player’s Initial Ability (Before) to throw strikes? Test an appropriate hypothesis and state your conclusion.

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Business Statistics

ISBN: 9781292269313

4th Global Edition

Authors: Norean Sharpe, Richard De Veaux, Paul Velleman

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