TABLE 12-18
as Part of an Evaluation Program, a Sporting

Short Answer

TABLE 12-18
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.
$$\begin{array} { l l l l l } \underline{\text { Trial }} & \underline{\text { Barth }} & \underline{\text { Tornado} } &\underline{ \text { Reiser }} &\underline{ \text { Shaw} } \\1 & 43 & 37 & 41 & 43 \\2 & 46 & 38 & 45 & 45 \\3 & 43 & 39 & 42 & 46\end{array}$$
-Referring to Table 12-18, to use the chi-square critical value for the Kruskal-Wallis test, the sample size in each group has to be greater than ______.