For a single-sample t-test the t(17) = 2.90, p<.02, how many were in the study?
Here is a hint:
The degrees of freedom for a single sample t-test is (n-1).
10
To determine the number of participants in a study given the information of a single-sample t-test, we need to look at the degrees of freedom (df) associated with the t-value provided. In this case, the degrees of freedom are indicated as t(17), where 17 represents the df.
The degrees of freedom for a single-sample t-test can be calculated by subtracting 1 from the total number of participants in the study. So, to find the number of participants, we add 1 to the degrees of freedom:
Number of participants = Degrees of freedom + 1
In this case, we have t(17), indicating that the degrees of freedom are 17. Thus, the number of participants in the study is:
Number of participants = 17 + 1 = 18
Therefore, there were 18 participants in the study.