TABLE 2-6 A Sample of 200 Students at a Big-Ten University Was

question 160

Multiple Choice

TABLE 2-6
A sample of 200 students at a Big-Ten university was taken after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midterm. The following table contains the result.

-Referring to Table 2-6, if the sample is a good representation of the population, we can expect ________ percent of the students in the population to spend the weekend studying and do poorly on the midterm.

• A) 10
• B) 20
• C) 45
• D) 50

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Definitions:

Gene Coalesce

A concept in molecular genetics where different alleles at a gene locus in different lineages trace back to a single ancestral allele.

Allele Fixed

The situation in a population where all members carry the same allele of a particular gene, leading to the lack of genetic variation for that gene locus.

Population Size

The total number of individuals within a defined area at a given time.

Molecular Phylogenetic Studies

Investigations that use molecular data, such as DNA sequences, to infer the evolutionary relationships among species.