A Sorority Has 12 Members, 4 of Whom Are Full

question 45

Multiple Choice

A sorority has 12 members, 4 of whom are full members and 8 are pledges. Two persons are selected at random from the membership list of the sorority. Find the probability: the second person selected is a pledge. ​

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Definitions:

Population Standard Deviation

A measure of the dispersion or spread of a set of data values in a population, indicating how much individuals within this population vary from the population mean.

Interval Estimate

An estimate of a population parameter that provides a range of values believed to contain the parameter with a certain degree of confidence.

Sample Standard Deviation

A measure of the dispersion or variability of a set of data points in a sample.

Point Estimate

A single value estimation derived from a sample that serves as the best guess of a population parameter.