Question

Chapter 7, Section 2, Exercise 033

Find the expected count and the contribution to the chi-square statistic for the (Group 2, No) cell in the two-way table below. Yes No Group 1 717 272 Group 2 1171 324 Round your answer for the excepted count to one decimal place, and your answer for the contribution to the chi-square statistic to three decimal places.

Expected count=

contribution to the chi-square statistic=

Answer 1

                    Yes                  No         Total

Group 1          717                  272          989

Group 2          1171                 324          1495

Total               1888                  596          2484

For (Group 2, No):

(a)

Expected count = (596 X 1495)/2484 = 358.7

(b)

Contribution to chi-square statisticis:

So,

Answer is:

3.357