TABLE 11-11
a Student Team in a Business Statistics

question 179

Short Answer

TABLE 11-11
A student team in a business statistics course designed an experiment to investigate whether the brand of bubblegum used affected the size of bubbles they could blow. To reduce the person-to-person variability, the students decided to use a randomized block design using themselves as blocks. Four brands of bubblegum were tested. A student chewed two pieces of a brand of gum and then blew a bubble, attempting to make it as big as possible. Another student measured the diameter of the bubble at its biggest point. The following table gives the diameters of the bubbles (in inches) for the 16 observations.
$$\begin{array}{l}\text { Brand of Bubblegum }\\\begin{array} { l c c c c } \hline \text { Student } & \text { A } & \text { B } & \text { C } & \text { D } \\\hline \text { Kyle } & 8.75 & 9.50 & 8.50 & 11.50 \\\text { Sarah } & 9.50 & 4.00 & 8.50 & 11.00 \\\text { Leigh } & 9.25 & 5.50 & 7.50 & 7.50 \\\text { Isaac } & 9.50 & 8.50 & 7.50 & 7.50 \\\hline\end{array}\end{array}$$
-Referring to Table 11-6, what is the critical value of Levene's test for homogeneity of variances at a 5% level of significance?

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Definitions:

Regulatory Capture

A situation where regulatory agencies are dominated by the interests of the industries they are supposed to regulate, rather than serving the public interest.

Special-Interest Effect

The scenario where a small group gains significant benefits from a public policy or action, often at the expense of the larger population.

Lobbyists

Individuals or organizations that attempt to influence governmental policies and decisions in favor of a specific cause or interest they represent.

Bundled Choice

Offering multiple products or services together as a single combined package, often at a reduced price compared to purchasing each item separately.