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 below shows the result. Scouters believe that Rodriguez pitches a speedier fastball. Pitcher Sample Mean Speed of Population Standard Pitchers m-h Deviation 1. What is the random variable? 2. State the null and alternative 3. What is the test statistic? 4. At the 1% signicance level, what is your conclusion