Ages of College Students The dean of students wants to see whether there is a significant difference in ages of resident students and commuting students. She selects a sample of 50 students from each group. The ages are shown here. At a 0.05, decide if there is enough evidence to reject the claim of no difference in the ages of the two groups. Use the standard deviations from the samples and the P-value method.
22 25 27 23 26 28 26 24
25 20 26 24 27 26 18 19
18 30 26 18 18 19 32 23
19 19 18 29 19 22 18 22
26 19 19 21 23 18 20 18
22 21 19 21 21 22 18 20
19 23
Commuter students
18 20 19 18 22 25 24 35
23 18 23 22 28 25 20 24
26 30 22 22 22 21 18 20
19 26 35 19 19 18 19 32
29 23 21 19 36 27 27 20
20 21 18 19 23 20 19 19
20 25