Use the following to answer the next five exercises The mean

Use the following to answer the next five exercises. The mean speeds of fastball pitches from two different baseball pitchers are to be compared. A sample of 14 fastball pitches is measured from each pitcher. The populations have normal distibutions. Table 10.18 shows the results. Scouters believe that Rodriguez pitches a speedier fastball.

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32. State the null and alternative hypotheses.

Solution

Null hypothesis: There is no significant difference between the mean speeds of wesely and Rodriguez baseball pitchers.

Alternative hypothesis:There is a significant difference between the mean speeds of wesely and Rodriguez baseball pitchers.