Calculate the value of chi-square and conclude with C1, C2, C3 or C4.

C1: We can confidently conclude that the distribution of types of toilet water is

20%, 30% and 50% from the new labels.

C2: We can confidently conclude that the gap between the old and the new distribution is

entirely due to chance.

C3: We can confidently conclude that the distribution of types of toilet water has changed

from the new labels.

C4: It cannot be concluded with confidence that the distribution of types of toilet water has

changed since the new labels.

a) 9.3 and C1

b) 9.3 and C2

c) 9.3 and C3

d) 9.3 and C4

e) 10.3 and C1

f) 10.3 and C2

g) 10.3 and C3

h) 10.3 and C4