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The manager of the Houston Astros decides to see whether batting practice has any impact on...

The manager of the Houston Astros decides to see whether batting practice has any impact on the Astros’ hitting. Twenty Astros take batting practice; they are randomly selected. Ten Astros, randomly selected, take no batting practice (the control group). After 25 games, the figures shown in the accompanying table are available. What can you tell the manager about his experiment, statistically and managerially?

Please show the calculations. Other ones do not show how it is worked out.

Math   Statistics-And-Probability   
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