concept, independent t test

The degrees of freedom for an independent samples t-test is calculated by:

adding subtracting 2

The independent-samples t-test should be used when participants are test multiple times and have scores in each of the groups being tested.

false

When conducting the independent samples t-test, a researcher must know the mean of the population.

false

Brenda is calculating a two-sample t-statistic. What value should she plug in for se?

the standard error

The null hypothesis in an independent-samples t-test would be stated as which of the following:

The mean of sample 1 is equal to the mean of sample 2.

Paul conducts an independent samples t-test and reports the following results: t = 2.72 and p<.05. What can you conclude

There is no statistical significance in the test.

The _______ assumption of the independent samples t-test states that the amount of variability in both groups should be equal.

homogenity of variance

Karl is conducting an independent samples t-test to examine whether there are differences in the average hours of sleep between a sample of men and women. What is Karl's dependent variable?

hours of sleep

The independent samples t-test is used when you are looking at the difference in the mean of a variable between _______ group(s) that are _______ of one another.

two independent