A random sample of 12 middle school students and 12 high school students were surveyed on the amount of time they spend doing extracurricular activities each week. The sample means and mean absolute deviations (MAD) are given.
Mean (hours) MAD (hours)
Middle School Students 2.75
0.63
High School Students 5.33
1.22
Based on the sample information, select from the drop-down lists to correctly complete the sentences.
There is Choose
variability in the sample of high school students than in the sample of middle school
students
The difference in sample means
Choose
meaningful because the means are separated by
Choose...
than 2 MADS.
Based on the difference in sample means it Choose
be concluded that an average high school student
spends more time on extracurricular activities than an average middle school student.