34) The contingency table below shows the results of a random sample of 400 stat

Question

34) The contingency table below shows the results of a random sample of 400 state representatives that was conducted to see whether their opinions on a bill are related to their party affiliation.

Opinion

Party

Approve

Disapprove

No Opinion

Republican

84

40

28

Democrat

100

48

36

Independent

20

32

12

Find the expected frequency for the cell E2,2. Round to the nearest tenth if necessary.

A) 34.96                      B) 45.6                                    C) 93.84                                  D) 55.

Opinion

Party

Approve

Disapprove

No Opinion

Republican

84

40

28

Democrat

100

48

36

Independent

20

32

12

Explanation / Answer

Expected frequency of cell E 2,2

= (2nd row total * 2nd column total) / (Grand total)

= (184 * 120) / 400

= 55.2

Option D is correct.

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