Having Calculated a 95% Confidence Interval for a Difference Between

question 30

Multiple Choice

Having calculated a 95% confidence interval for a difference between two means,we may conclude that the odds are 95/100 that the

• A)true population mean difference falls in the interval.
• B)difference between the sample mean is the same as the difference between the population means.
• C)obtained interval contains the true population mean difference.
• D)population mean difference is less than 95.

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Definitions:

Hours

A unit of time equal to 60 minutes.

Computers

Electronic devices that can store, retrieve, and process data, and execute programmed instructions.

Probability

The measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Skewed Distribution

A statistical term describing an asymmetry in the frequency distribution of a set of data.