Hours of Daily Internet Usage for Three Socioeconomic Groups
Participant Number SES Codes for SES levels Hours of Internet Usage weekly
1 High 3 10
2 High 3 12
3 High 3 11
4 High 3 15
5 Middle 2 14
6 Middle 2 13
7 Middle 2 10
8 Middle 2 12
9 Low 1 9
10 Low 1 11
11 Low 1 8
12 Low 1 12
a. What is the mean for the low-SES group?
b. What is the mean for the middle-SES group?
c. What is the mean for the high-SES group ?
d. What is the value of F?
e. What is the value of the associated probability?
f. Are the differences among the means for the SES groups statistically significant at the .05 level?
g. Make statement of the results of the significance test.