A Student Wanted to Determine If the Mean Number of Times

Multiple Choice

A student wanted to determine if the mean number of times a student missed class was different for sophomores, juniors, and seniors. After collecting attendance data, the student ran an ANOVA and found that MS_groups was much larger than MS_error. This student can conclude that

A) sophomores miss class more than juniors and seniors.
B) there is a difference in the mean number of times sophomores, juniors, and seniors miss class.
C) seniors miss class more than sophomores and juniors.
D) there is no difference between the groups.