Suppose That You Are Using a 9-Point Rating Scale to Compare

question 53

Multiple Choice

Suppose that you are using a 9-point rating scale to compare men who have an annual income over $50,000 (Group 1) with men who have an annual income less than or equal to $50,000 (Group 2) with regard to their assessment of a new product.There are forty men in Group 1 and they have a mean of 7 and a standard deviation of 2.5,while the 35 men in Group 2 have a mean of 5 and a standard deviation of 1.4.What is the approximate value of t using the t-test?

• A)3.43
• B)4.19
• C)5.64
• D)There is not enough information to determine this.

Grasp the criteria for determining cause-and-effect relationships in epidemiology.

Recognize the importance of theory in scientific research.

Differentiate between experimental, correlational, and observational study designs.

Interpret relative and absolute risks in health-related outcomes.

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Definitions:

Genetic Influences

Factors determined by one's genes that affect physical traits, behaviors, and health outcomes.

Correlation Coefficient

A statistical measure that calculates the strength and direction of a linear relationship between two variables on a scatter plot.

Polygenic Inheritance

A mode of inheritance in which traits are influenced by several genes, contributing to the phenotype in a cumulative or quantitative manner.

The Bell Curve

A book that argues intelligence is a significant predictor of personal outcomes, and discusses differences in intelligence among races, eliciting widespread controversy.