TABLE 12-2 The Dean of a College Is Interested in the Proportion

question 11

Multiple Choice

TABLE 12-2
The dean of a college is interested in the proportion of graduates from his college who have a job offer on graduation day.He is particularly interested in seeing if there is a difference in this proportion for accounting and economics majors.In a random sample of 100 of each type of major at graduation,he found that 65 accounting majors and 52 economics majors had job offers.If the accounting majors are designated as "Group 1" and the economics majors are designated as "Group 2," perform the appropriate hypothesis test using a level of significance of 0.05.
-Referring to Table 12-2,the hypotheses the dean should use are

• A)H₀ : π₁ - π₂ = 0 versus H₁ : π₁ - π₂ ≠ 0.
• B)H₀ : π₁ - π₂ ≠ 0 versus H₁ : π₁ - π₂ = 0.
• C)H₀ : π₁ - π₂ ≤ 0 versus H₁ : π₁ - π₂ > 0.
• D)H₀ : π₁ - π₂ ≥ 0 versus H₁ : π₁ - π₂ < 0.

Understand how gene expression is regulated through modifications such as histone acetylation and the role of transcription factors.

Comprehend the structure and function of an operon, including the roles of promoters, operators, and repressors in prokaryotic gene regulation.

Grasp the significance of microRNAs in inhibiting translation of specific genes.

Appreciate the functional conservation of genes across species as demonstrated by gene expression experiments.

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Definitions:

Experimental Research Method

A research methodology that tests hypotheses and establishes cause-effect relationships by manipulating independent variables and observing their effects on dependent variables.

Cause-and-Effect Relationships

The principle that an action or event (cause) will produce a certain response or outcome (effect) in a given context.

Descriptive

Pertaining to the detailed description of characteristics, behaviors, or the setting of an event without imposing any interpretations or judgments.

Correlational Research

A method of research that examines the relationship between two or more variables to determine if a change in one is associated with a change in the other(s).