The key piece of information that signals we should use a one-sample t -test is:

Question

The key piece of information that signals we should use a one-sample t-test is:

a. knowing the mean and standard deviation of the population.

b. when we have 2 different groups that are each measured once.

when we have one group that is measured twice.

d. knowing the mean of the population but not the standard deviation.

a. knowing the mean and standard deviation of the population.

b. when we have 2 different groups that are each measured once.

when we have one group that is measured twice.

d. knowing the mean of the population but not the standard deviation.

Explanation / Answer

A one sample t-test is used when the population standard deviation is NOT known.

The key piece of information that signals we should use a one-sample t-test is:

d. knowing the mean of the population but not the standard deviation

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