SOLUTION: please help me to identify the correct answer from below four answers The chancellor of a major university was concerned about alcohol abuse on her campus and wanted to find ou

Question 388482: please help me to identify the correct answer from below four answers
The chancellor of a major university was concerned about alcohol abuse on her campus and wanted to find out the proportion of students at her university who visited campus bars on the weekend before the final exam week. Her assistant took a random sample of 250 students. The portion of students in the sample who visited campus bars on the weekend before the final exam week is an example of

a categorical random variable.

a discrete random variable.

a continuous random variable.

a parameter.

Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

ANSWER:

A parameter is a value, usually unknown (and which therefore has to be estimated), used to represent a certain population characteristic.
For example, the population mean is a parameter that is often used to indicate the average value of a quantity.
Within a population, a parameter is a fixed value which does not vary. Each sample drawn from the population has its own value of any statistic that is used to estimate this parameter.
For example, the mean of the data in a sample is used to give information about the overall mean in the population from which that sample was drawn.
Parameters are often assigned Greek letters.

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