Exhibit 7-12: an Investigator Is Studying the Effect of Two

question 11

Multiple Choice

Exhibit 7-12: An investigator is studying the effect of two physical fitness programs (M and N) on boys and girls.The experimental design is a 2 * 2 factorial design.The results of the investigation might be one of the following four conditions.
$\begin{array}{l}\begin{array}{lll}&\text { Condition (a) }\\&\mathrm{M} & \mathrm{N} \\\text { Boys }&\mathrm{X}=50 & \mathrm{X}=60 \\\text { Girls }&\mathrm{X}=60 & \mathrm{X}=50\end{array}\begin{array}{lll}&\text { Condition (b) }\\&\mathrm{M} & \mathrm{N} \\\text { Boys }&\mathrm{X}=50 & \mathrm{X}=60 \\\text { Girls }&\mathrm{X}=40 & \mathrm{X}=60\end{array}\end{array}$

$\begin{array}{l}\begin{array}{lll}&\text { Condition (c) }\\&\mathrm{M} & \mathrm{N} \\\text { Boys }&\mathrm{X}=50 & \mathrm{X}=40 \\\text { Girls }&\mathrm{Y}=60 & \mathrm{Y}=50\end{array}\begin{array}{lll}&\text { Condition (d) }\\&\mathrm{M} \quad\quad\quad\quad\quad\quad\quad\quad \mathrm{N} \\&\text { None of these condition }\\\\\end{array}\end{array}$

-Refer to Exhibit 7-12.Which condition shows two possible main effects but no interaction effect?

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Definitions:

Neuropathy

A disorder or damage affecting the nerves, which can result in numbness, weakness, and pain, commonly in the hands and feet.

Plantar Warts

Hard, grainy growths that appear on the heels or balls of the feet, caused by the human papillomavirus (HPV), and often feel like a stone in the shoe.

Virus

A microscopic infectious agent that can only replicate inside the living cells of an organism, causing various diseases in humans, animals, and plants.

Corns

Hardened areas of skin that usually form on the toes due to friction and pressure.