If an Experimenter Conducts a T Test for Independent Means

question 42

Multiple Choice

If an experimenter conducts a t test for independent means and rejects the null hypothesis,the correct interpretation is that

• A)the samples were from populations that were actually dependent rather than independent.
• B)the variance of one sample is so much larger than the variance of the other sample that the variances of the parent populations must not have been the same after all.
• C)the mean of one sample is so far from the mean of the other sample that the samples must come from populations with different means.
• D)the mean of one sample is statistically the same as the mean of the other sample,so they probably come from populations with equal means.

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Definitions:

Nominal Interest Rate

The rate of interest before adjusting for inflation, representing the face value of interest payments made on savings or loans.

Real Interest Rate

The interest rate adjusted for inflation, representing the real cost of borrowing and the real yield to lenders.

Inflation

A general increase in prices and fall in the purchasing value of money over time.

Bureau of Labor Statistics

A United States government agency that collects, processes, and disseminates essential statistical data about labor markets, employment, and inflation.