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Select the TWO options that are TRUE statements about two-sample t-tests.

Select one or more:
The same formula is used for the ESE (estimated standard error) in the two-sample t-test with a common variance and the two-sample t-test with unequal variances.
A researcher has collected two samples of data and the sample variances are 1.45 and 2.11. It would not be appropriate to use the two-sample t-test with a common variance.
A researcher has collected two samples of data and the sample variances are 2.16² and 4.82². It would not be appropriate to use the two-sample t-test with a common variance.
The two-sample t-test with unequal variances has, as its null hypothesis, that the means of the two populations involved are the same.
It is not possible to find a confidence interval for the difference between two means based on the two sample t-test with unequal variances.

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