Question

facts cover-up 309 dem 42 rep 64 246

Answer 1

24)

Applying chi square test of independence:

Expected	Ei=row total*column total/grand total	facts	Cover-up	Total
	dem	56.2874	294.7126	351
	rep	49.7126	260.2874	310
	total	106	555	661
chi square    χ2	=(Oi-Ei)2/Ei	facts	Cover-up	Total
	dem	3.627	0.693	4.3192
	rep	4.106	0.784	4.8905
	total	7.7328	1.4769	9.2097
test statistic X2=		9.21

p value =

0.0024

from excel: chidist(9.2097,1)

since p value <0.05

c. the hypothesis that they are independent is rejected

25)

for this data table of observed frequencies are required.