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t-test
A t-test is any statistical hypothesis test in which the test statistic follows a Student's t-distribution under the null hypothesis. It is most commonly applied when the test statistic would follow a normal distribution if the value of a scaling term in the test statistic were known (typically, the scaling term is unknown and therefore a nuisance parameter). When the scaling term is estimated based on the data, the test statistic—under certain conditions—follows a Student's t distribution. The t-test's most common application is to test whether the means of two populations are different.
Long Test
If a correlated-groups t-test and an independent-groups t-test both have df = 10, which experiment used fewer participants?
a.
The independent-groups t test
b.
The correlated-groups t test
c.
They both used the same number of participant, (n = 12).
d.
They both used the same...