A randomly selected sample of
1,000 individuals were asked whether they were planning to buy a new cellphone in the next
12 months. A year later the same persons were interviewed again to find out whether they actually bought a new cellphone. The response of both interviews is given below
| Buyers | Non-buyers |
Plan to buy | 200 | 50 |
No plan to buy | 100 | 650 |
If a person was selected at random, what is the probability that he/she (i) had a plan to buy.