Four Brands of Baseball Bats Were Tested to Determine Which

question 30

Multiple Choice

Four brands of baseball bats were tested to determine which bat allowed hitters to hit a baseball farthest. Eight different batters were thrown 25 pitches while hitting with each of the four bats
(assigned in random order) . The average distance of the five longest hits using each bat is shown
In the table below. The goal is to determine if the average hit distance differs for the four brands of
Baseball bats. $$\begin{array}{l}\begin{array} { c | c | c | c | c } \text { Batter } & \text { Brand 1 } & \text { Brand 2 } & \text { Brand 3 } & \text { Brand 4 } \\\hline 1 & 307 & 315 & 300 & 275 \\2 & 310 & 317 & 305 & 285 \\3 & 335 & 335 & 330 & 302 \\4 & 325 & 328 & 320 & 300 \\5 & 300 & 305 & 295 & 270 \\6 & 345 & 350 & 340 & 310 \\7 & 312 & 315 & 308 & 300 \\8 & 298 & 302 & 295 & 288\end{array}\\\text { The ANOVA table output is shown here: }\\\begin{array} { c | c | c | c | c | c } \text { Source } & \text { DF } & \text { SS } & \text { MS } & \text { F } & \text { P } \\\hline \text { Batter } & 7 & 6227.4 & 946.77 & 39.70 & 0.0000 \\\text { Brand } & 3 & 4117.6 & 1372.54 & 57.55 & 0.0000 \\\text { Error } & 21 & 500.9 & 23.85 & & \\\text { Total } & 31 & 11245.9 & & &\end{array}\end{array}$$ Identify the test statistic that should be used for testing whether the average distance hit for the
Four brands of baseball bats differ.

• A)39.7
• B)57.55
• C)0.0000
• D)23.85

---

Definitions:

Letter Presentation

The act of displaying letters or characters in a particular manner or context, often used in cognitive and perceptual experiments.

Multimodal Perception

The ability to perceive an object or event by more than one sensory system simultaneously.

Sensory System

The Sensory System is the part of the nervous system responsible for processing sensory information, which includes sight, sound, smell, taste, and touch.

Swaddling

The practice of wrapping infants tightly in blankets or cloths to restrict movement and mimic the security of the womb.