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Chapter 10: Q.32 (page 597)

Use the following information 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 distributions. Table 10.18 shows the result. Scouters believe that Rodriguez pitches a speedier fastball.

State the null and alternative hypotheses.

Short Answer

Expert verified

H0:渭Wesley=渭RodriguezH1:渭Wesley<渭Rodriguez

Step by step solution

01

Given information

The table is

02

Step 2: State the null and alternative hypotheses.

Both baseball pitchers have the same speed, according to the null hypothesis.

Let's say Wesley's average fastball speed is 渭wesley.

Let's say Rodriguez's average fastball speed is 渭Rodriguez.

Below are the null and alternative hypotheses.

H0:渭wellyy=渭rodriguesH1:渭welcy<渭rodrigues

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