Answer:
Check the explanation
Step-by-step explanation:
a. there are two categorical variables here:
region with two level : China and US
and cooperation with two level : Defect and cooperate.
b. Chi-square test for association can be used here since the variables are categorical in nature.
Chi-Square Test for Association: C6, Worksheet columns
Rows: C6 Columns: Worksheet columns
defect cooperate All
China 31 36 67
39.54 27.46
US 41 14 55
32.46 22.54
All 72 50 122
Cell Contents: Count
Expected count
Pearson Chi-Square = 9.985, DF = 1, P-Value = 0.002
Likelihood Ratio Chi-Square = 10.231, DF = 1, P-Value = 0.001