Pauline is testing the claim that students from her university have better spatial memory than the average student in the country. She measures the average spatial memory of 50 students and compares it to the national average. What test is she using and what are the degrees of freedom of this test?
A) Independent samples t test; 49
B) One sample t test; 48
C) One sample t test; 49
D) Independent samples t test; 48

Question

Quizplus · Accepted Answer

Pauline is testing the claim about her university's students by comparing their average to the national average. This means that she is performing a one sample t test. As she only has one group of students, the degrees of freedom will be the number of students minus 1 (n-1). Therefore, the degrees of freedom will be 50-1=49.

Pauline Is Testing the Claim That Students from Her University