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Chapter 10: Q. 31 (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.

What is the random variable?

Short Answer

Expert verified

The difference in mean fastball pitch speeds between the two pitchers is a random variable.

Step by step solution

01

Given information

The table is

02

Find the random variable?

The random variable represents the difference in mean fastball pitch speeds between Wesley and Rodriguez, two baseball pitchers.

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