The mean stubbornness scores for the 8 individuals in sample A was 36. The mean for sample B, consisting of 12 individuals, was 42. A two-tailed independent samples t test was conducted and t_obt = +2.33. Given an α = .05, we can conclude that A) there was no significant difference between the means. B) there was a significant difference between the means. C) the null hypothesis should be rejected. D) both "b" and "c" are correct.

Question

Quizplus · Accepted Answer

A t-value of +2.33 with an α = .05 typically indicates a significant difference between the two groups, leading to the rejection of the null hypothesis. This means both B (there was a significant difference between the means) and C (the null hypothesis should be rejected) are correct.

The Mean Stubbornness Scores for the 8 Individuals in Sample