A University Surveyed Recent Graduates of the English Department for Their

question 41

Multiple Choice

A university surveyed recent graduates of the English department for their starting salaries. Four hundred graduates returned the survey. The average salary was $25,000,with a standard deviation of $2,500. What is the best point estimate of the population mean?

• A)$25,000
• B)$2,500
• C)$400
• D)$62.5

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Definitions:

Normal Population

A population with a distribution that follows the normal (Gaussian) curve, where most measurements are centered around the mean.

Sample Mean

The average value calculated from a sample of data, often used as an estimate of the population mean.

Null Hypothesis

In hypothesis testing, it is the default hypothesis that there is no effect or no difference, and it is subject to test for possible rejection.

Cholesterol Levels

The amount of cholesterol present in the bloodstream, important for assessing heart disease risk.