A sample of 100 students was asked to pick a computerassisted, class, an online
ID: 2914868 • Letter: A
Question
A sample of 100 students was asked to pick a computerassisted, class, an online class or a lecture class instatistics. The following table gives the number of studentswho chose a particular method of instruction. Test thehypothesis that all three methods are equally preferred.
Class
CA
O
L
Observed Count
30
35
35
Expected
a) What is the value of the test statistic______________?
b) What is the critical 5% value______________________?
c) What conclusion do you make?_________________________________________
Class
CA
O
L
Observed Count
30
35
35
Expected
Explanation / Answer
Observed(Oi)
Expected(Ei)
(OI-Ei)^2
(OI-Ei)^2/Ei
30
33.3333
11.11089
0.333327
35
33.3333
2.777889
0.083337
35
33.3333
2.777889
0.083337
Average
33.33333
chi-squaer value
0.500001
Observed(Oi)
Expected(Ei)
(OI-Ei)^2
(OI-Ei)^2/Ei
30
33.3333
11.11089
0.333327
35
33.3333
2.777889
0.083337
35
33.3333
2.777889
0.083337
Average
33.33333
chi-squaer value
0.500001