For a particular company, data was collected on hourly workers and salaried workers preference for two difference pension plans: Plan 1 (p1) and Plan 2 (p2). Using the table below, what is the probability employees prefer Plan 1?
Pension Plan
Job Classification Plan1 Plan2 Total
Hourly Workers 120 100 220
Salaried Workers 80 100 180
Total 200 200 400