Find r2 A: .003 B: .36 C:  .53 D: .73 E: .20

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Find r2

A: .003

B: .36

C:  .53

D: .73

E: .20

A researcher theorizes that students in sororities and fraternities drink
more than other college students. In order to test this theory, the
psychologist randomly selects 4 college students who plan to join a
fraternity or sorority and asks them how much they drink on an average
week before joining their fraternity/sorority and then the researcher asks
them how much they drink in a typical week after they have joined a
sorority/fraternity. Their responses are recorded below.
After Joining
Before Joining
Fraternity/Sorority Fraternity/Sorority
23
10
6
3
16
6
M =
12
6
SS =
254
26
Conduct a 2-tailed hypothesis test by hand at the 5% level of
significance to determine if there is a significant difference in alcohol
consumption between conditions.
Transcribed Image Text:A researcher theorizes that students in sororities and fraternities drink more than other college students. In order to test this theory, the psychologist randomly selects 4 college students who plan to join a fraternity or sorority and asks them how much they drink on an average week before joining their fraternity/sorority and then the researcher asks them how much they drink in a typical week after they have joined a sorority/fraternity. Their responses are recorded below. After Joining Before Joining Fraternity/Sorority Fraternity/Sorority 23 10 6 3 16 6 M = 12 6 SS = 254 26 Conduct a 2-tailed hypothesis test by hand at the 5% level of significance to determine if there is a significant difference in alcohol consumption between conditions.
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