Consider a Situation in Which We Expect One-Third of the Observed

question 32

Multiple Choice

Consider a situation in which we expect one-third of the observed values to be in each of three categories. We can use an ?² goodness-of-fit test to test whether the frequencies of offspring are as expected. If the numbers of values in each category are 13, 18, and 29, and using the table of critical values shown, what is the conclusion of our test?
?
$\begin{array}{c}\chi^{2} \text { critical values }\\\text { for } d f=2\\\begin{array}{ll}\text { Sig. level } & \text { Value } \\\hline 0.05 & 5.99 \\0.025 & 7.38 \\0.01 & 9.21\end{array}\end{array}$

• A) Fail to reject the null hypothesis, we lack the evidence to decide that the frequencies differ from those that were expected.
• B) Fail to reject the null hypothesis, we have good evidence to decide that the frequencies differ from those that were expected.
• C) Reject the null hypothesis, we lack the evidence to decide that the frequencies differ from those that were expected.
• D) Reject the null hypothesis, we have good evidence to decide that the frequencies differ from those that were expected.

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Definitions:

Divided

Separated into parts or pieces; often used to describe roads or cells that split into two or more pathways or segments.

Lobes

Divisions or sections of an organ separated by fissures, especially in the brain, lungs, and liver.

Lingual Frenulum

A fold of mucous membrane in the midline of the underside of the tongue, connecting the tongue to the floor of the mouth.

Oral Cavity

The mouth, including the lips, teeth, gums, and the initial portion of the alimentary canal, playing a key role in speech, breathing, and digestion.