College students are a unique population when it comes to drinking behavior, giv
ID: 3363042 • Letter: C
Question
College students are a unique population when it comes to drinking behavior, given that while in school, they often become able to drinking legally. We think that attitudes towards drinking may be different among different types of college students, particularly those that attend a traditional 4-year college and live on campus versus those that live off campus. The idea here is that students that are not around their peers as much (i.e., those that live off campus), are likely to be more conservative about drinking behaviors. We asked these students to tell use their average number of drinks per day (this is completely made up data). Using the information below, and = 0.05, test whether students who live off campus drink less than their on campus counterparts.
Live off Campus
Live on Campus
n = 12
n = 6
s2 = 2.3
s1 = 1.2
x2 -bar = 0.5
x1 -bar = 2
1. What is your obtained t?
a. -1.981
b. -1.212
c. -1.483
d. -1.548
Live off Campus
Live on Campus
n = 12
n = 6
s2 = 2.3
s1 = 1.2
x2 -bar = 0.5
x1 -bar = 2
Explanation / Answer
The statistical software output for this problem is:
Two sample T summary hypothesis test:
1 : Mean of Population 1
2 : Mean of Population 2
1 - 2 : Difference between two means
H0 : 1 - 2 = 0
HA : 1 - 2 0
(with pooled variances)
Hypothesis test results:
Hence,
1. Obtained t = -1.483
Difference Sample Diff. Std. Err. DF T-Stat P-value 1 - 2 -1.5 1.010801 16 -1.4839716 0.1572