TABLE 11-11
a Student Team in a Business Statistics Course

question 57

True/False

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 11-11, the null hypothesis for the randomized block F test for the difference in the means should be rejected at a 0.05 level of significance.

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Definitions:

Active Intervention

Proactive measures taken to address or resolve problems, typically in a clinical or therapeutic context, aiming for positive change.

Assessment Interview

A structured conversation between a healthcare provider and a patient aimed at gathering comprehensive information to evaluate the patient's health status or psychological condition.

Sudden Change

An abrupt alteration or transformation in a situation, behavior, or condition that occurs unexpectedly.

Suicide Precautions

Measures taken to prevent a person from attempting suicide, often involving close supervision and removal of means to inflict self-harm.