Ana is comparing spatial ability scores for four groups.She finds that the F statistic for her test is 4.01, and the cutoff value she identified prior to her analysis was 3.45.Should Ana reject or fail to reject the null hypothesis and what, if any, other steps does she need to take?
A) Fail to reject the null hypothesis since her F statistic is below the cutoff, and perform a post hoc test to determine between which groups the significant difference lies.
B) Fail to reject the null hypothesis since her F statistic is below the cutoff, and write up the results with no further testing.
C) Reject the null hypothesis since her F statistic is beyond the cutoff, and write up the results with no further testing.
D) Reject the null hypothesis since her F statistic is beyond the cutoff, and perform a post hoc test to determine between which groups the significant difference occurs.

Question

Quizplus · Accepted Answer

Ana's F statistic is higher than the cutoff value, indicating that there is a statistically significant difference between the groups. Therefore, she should reject the null hypothesis. After finding a significant F statistic, it's necessary to conduct post hoc tests to identify where the differences between groups lie.

Ana Is Comparing Spatial Ability Scores for Four Groups