Exhibit 9-5

question 31

Multiple Choice

Exhibit 9-5.A university interested in tracking their honors program believes that the proportion of graduates with a GPA of 3.00 or below is less than 0.20.In a sample of 200 graduates,30 students have a GPA of 3.00 or below. Refer to Exhibit 9-5.In testing the university's belief,how does one define the population parameter of interest?

• A)It's the proportion of honors graduates with a GPA of 3.00 or below.
• B)It's the mean number of honors graduates with a GPA of 3.00 or below.
• C)It's the number of honors graduates with a GPA of 3.00 or below.
• D)It's the standard deviation of the number of honors graduates with a GPA of 3.00 or below.

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Definitions:

Standard Normal Curve

A type of normal distribution that has a mean of 0 and a standard deviation of 1, represented graphically as a bell-shaped curve.

Area

A measure of the extent of a surface or shape, expressed in square units.

Z-score

An indicator that shows the number of standard deviations a particular value is away from the average.

Standard Normal Curve

A symmetric bell-shaped curve that represents the distribution of a standardized variable, with a mean of 0 and a standard deviation of 1.