Over the Entire Six Years That Students Attend an Ohio

question 49

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. The probability that the sample mean is between 25 and 30 school days is ________.

• A) 0.0228
• B) 0.0918
• C) 0.8860
• D) 0.9082

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Definitions:

Contract Curve

In economics, it represents the locus of points indicating the optimal distribution of resources between parties in an Edgeworth box diagram.

Indifference Curve

A graph showing combinations of two goods that give a consumer equal satisfaction and utility.

Efficient Allocation

The optimal distribution of resources and goods to maximize the net benefit or welfare within an economy.

Allocation Efficient

A distribution of resources in which it is impossible to make any one individual better off without making at least one individual worse off.