Compute the appropriate t-test.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 9PPS
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Compute the appropriate t-test.


Education researchers were interested in whether the number of close friends changes between the time students enter college and the beginning of their second year of college. A sample of 12 (entering) first-year students was used to examine the question. Data for this sample are shown below. 

Student    #of friends at the Start of the yr.                  

A.                   5
B                    2                     

C                    1

D                    4

E                   12

F                     2

G                    3

H                     0

I                      5

J                     4

K                     2

L.                     3

#of friends at the start of 2nd yr. 

4

3

3

6

13

10

5

2

3

7

6

5

 

 

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