Most companies offer their employees a variety of health care plans to choose from - e.g., preferred provider organizations (PPOs) and health maintenance organizations (HMOs).
A survey of 100 large, 100 medium, and 100 small companies that offer their employees HMOs, PPOs, and fee-for-service plans was conducted; each rm provided information on the plans chosen by their employees. These companies had a total employment of 833,303 people. A breakdown of the number of employees in each category by rm size and plan is provided in the table.
I tried to use conditional probability to solve this and got 0.310 as my answer. I am not sure if this is right, wrong or If I am even close, so I'll appreciate any help.
A survey of 100 large, 100 medium, and 100 small companies that offer their employees HMOs, PPOs, and fee-for-service plans was conducted; each rm provided information on the plans chosen by their employees. These companies had a total employment of 833,303 people. A breakdown of the number of employees in each category by rm size and plan is provided in the table.
| Company Size | Fee-for-Service | PPO | HMO | Totals |
| Small | 1,808 | 1,757 | 1,456 | 5,021 |
| Medium | 8,953 | 6,491 | 6,938 | 22,382 |
| Large | 330,419 | 241,770 | 233,711 | 805,900 |
| Totals | 341,180 | 250,018 | 242,105 | 833,303 |
I tried to use conditional probability to solve this and got 0.310 as my answer. I am not sure if this is right, wrong or If I am even close, so I'll appreciate any help.
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