When Constructing a Confidence Interval for the Population Mean and the Standard

question 54

Multiple Choice

When constructing a confidence interval for the population mean and the standard deviation of the sample is used, the degrees of freedom for the t distribution equals

• A)n-1
• B)n
• C)29
• D)30

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Definitions:

Directional Selection

A type of natural selection in which one extreme phenotype is favored over others, causing the allele frequency to shift over time in that direction.

Quantitative Trait Locus (QTL)

Quantitative trait locus (QTL) is a stretch of DNA that is correlated with variation in a phenotypic trait. These regions contain genes, or are linked to genes, that contribute to population differences in a phenotype.

Phenotypic Trait

An observable and measurable characteristic of an organism, which can result from its genetic makeup and environmental influences.

DNA

DNA, or deoxyribonucleic acid, is a molecule that contains the instructions an organism needs to develop, live, and reproduce.