Which of the Following Is the Numerator of the Test

question 67

Multiple Choice

Which of the following is the numerator of the test statistic for the related-samples t test?

• A) the sum of the difference scores for each participant
• B) the value of the test statistic plus the degrees of freedom
• C) the mean difference observed minus the mean difference stated in a null hypothesis
• D) estimated standard error for difference scores

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Definitions:

Nonevolving Population

A theoretical population in which allele frequencies do not change over time, effectively not undergoing evolution.

Speciation

Origin of new species due to the evolutionary process of descent with modification.

Genetic Drift

A mechanism of evolution that involves random changes in the frequency of alleles within a population over time.

Allele

Alternative form of a gene; alleles occur at the same locus on homologous chromosomes.