An automobile manufacturing company is attempting to cope with rising health care costs of its employees. It offers three types of plans. Based on a random sample of 200 employees selected last year, Table shows the number who selected each plan.
The same table also shows, for a random sample of 150 employees selected in the current year, the number who selected each plan. Can we conclude that employee preferences for the health care plans have changed from last year? Use α = 0.05. What is the p-value?
|
Year
|
Plan 1
|
Plan 2
|
Plan 3
|
|
Last year
|
50
|
40
|
110
|
|
Current year
|
15
|
45
|
90
|