Lianna would like to find out if a new type of therapy works. She recruits 15 patients with phobia and measures their phobia scores. Then, she gives them the therapy for 2 weeks. At the end of 2 weeks, she measures their phobia scores again. What test should Lianna use to examine her data?
A) Independent samples t-test
B) Dependent samples t-test
C) One-sample t-test
D) Z-test

Question

Quizplus · Accepted Answer

Lianna is measuring the same patients before and after the therapy, so she should use a dependent samples t-test to compare the difference in their phobia scores.

Lianna Would Like to Find Out If a New Type