You ran a study at your business examining how many new versus established employees joined your company's retirement program based on 2 incentive plans.
Your data look like this:
Incentive 1 Incentive 2
New 40 70
Established 160 100
You want to know if the incentives were more/less effective for the groups of employees. What is the standardized residual for the group that differed most from what was expected?
a. -2.112
b. 1.445
c. -3.174
d. 2.737