If the results of an experiment using tind were summarized as t(30) = 2.817, p

Question

If the results of an experiment using tind were summarized as t(30) = 2.817, p < .05, then you would know that the total number of participants used (N) was and the null hypothesis was.
A)32; rejected
B)32; not rejected
C)30; rejected
D)30; not rejected

Quizplus · Accepted Answer

The total number of participants (N) is 32 because the degrees of freedom (df) in a t-test is calculated as N - 2 for a two-sample t-test, and the null hypothesis was rejected because the p-value is less than .05, indicating a statistically significant difference.

If the Results of an Experiment Using Tind Were Summarized