Quiz

A study was done to see if there was a relationship between blood type and political affiliation.  The table below shows counts of a survey that was conducted.  436 people were surveyed.

  Republican Democrat Independent
O 90 85 20
A 60 48 7
B 45 50 4
AB 12 12 3

 

A.  Compute the contribution to c2 from the democrats with type B blood.

B.  If the c2 statistics was 5.88, what can be concluded at the 0.05 level of significance?