Over the Entire Six Years That Students Attend an Ohio

question 102

Multiple Choice

Over the entire six years that students attend an Ohio elementary school, they are absent, on average, 28 days due to influenza. Assume that the standard deviation over this time period is σ = 9 days. Upon graduation from elementary school, a random sample of 36 students is taken and asked how many days of school they missed due to influenza. What is the expected value for the sampling distribution of the number of school days missed due to influenza?

• A) 6
• B) 9
• C) 28
• D) 168

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Definitions:

Factor A

A variable manipulated by the researcher in an experiment to observe its effect on the dependent variable; often used in the context of factorial designs.

MSA

An abbreviation for Metropolitan Statistical Area, which is a geographical region with a relatively high population density at its core and close economic ties throughout the area.

Critical Value

A point on the scale of a test statistic beyond which the null hypothesis is rejected in favor of an alternative hypothesis.

Interaction Effect

A statistical phenomenon where the effect of one independent variable on a dependent variable depends on the level of another independent variable.