TABLE 11-6
as Part of an Evaluation Program, a Sporting

question 157

True/False

TABLE 11-6
As part of an evaluation program, a sporting goods retailer wanted to compare the downhill coasting speeds of 4 brands of bicycles. She took 3 of each brand and determined their maximum downhill speeds. The results are presented in miles per hour in the table below.
$$\begin{array} { c c c c c } \hline \text { Trial } & \text { Barth } & \text { Tornado } & \text { Reiser } & \text { Shaw } \\\hline 1 & 43 & 37 & 41 & 43 \\2 & 46 & 38 & 45 & 45 \\3 & 43 & 39 & 42 & 46\end{array}$$
-Referring to Table 11-6, the test is valid only if the population of speeds is normally distributed.

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Definitions:

Bootstrap Distribution

A sampling distribution estimated by resampling with replacement from an observed dataset, typically used to estimate the variability of a statistic.

Confidence Interval

An interval estimate that provides an upper and lower limit within which the true parameter of a population is expected to fall, with a specified probability.

Annual Salaries

The total earnings of an individual or employee over the course of a year, excluding bonuses or other additional payments.

Corporate Executives

High-ranking officials within a corporation who are responsible for making major decisions and implementing policies.