3.
On average the students go out 3 times per week. (You are trying to show that the students do not go out 3 times per week. That is your prediction/hypothesis, which you’ll put under the alternative hypothesis.)
H
0
= The students go out 3 times per week Halignl
¿
1
¿
¿
¿
= The students do not go out 3 times per week
The results of the one-sample t test show that students, on average, do not go out 3 nights per week
(
χ
2
=
2.11
,SD
=
0.995
,t
(
83
)
=−
8.17
, p
=
.
<
0.001
)
4.
Can you reject the null hypothesis that the students like wine cooler and tequila about the same?
For question 4, I used a paired samples test to determine if we can reject the null hypothesis that students like wine cooler and tequila about the same. In conducting this test, I determined how the two-sided p-
value is 0.432. Considering that 0.432 is greater than 0.05, I determined that we cannot reject the null hypothesis and can conclude that there is no statistical difference. In summary, this indicates that students
like wine cooler and tequila about the same.
5.
Do Greeks, on the average, have as many drinks as independents (i.e., non-Greeks)? (The null hypothesis is that Greeks and Independents have the same number of drinks.)
H
0
= Greeks and Independents have the same number of drinks Halignl
¿
1
¿
¿
¿
= Greeks and Independents do not have the same number of drinks
The results of the independent-samples t-test show that Greeks and Independents do not have the same number of drinks.
(
χ
2
Greek
=
6.43
,SD
=
3.25
, χ
2
Independent
=−
4.42
,SD
=
2.95
,t
(
80
)
=
2.94
, p
=
0.004
)
6.
Can you reject the null hypothesis that students with GPA 3.2 and above go out more often than students with GPAs below 3.2? (Hint: Use GPA2 in question 2)
The results of an independent-samples t-test show that students with GPA 3.2 do not go out more
often than students with GPAs below 3.2
χ
2
Below
=
2.32
,SD
=
0.99
vs χ
2
Above
=
1.81
,SD
=
0.96
,t
(
80
)
=
2.32
, p
=
0.012
¿
