The checking accounts of USF Credit Union are categorized by age of account and balance in account. We are going to select an account at random from this group of 2000 accounts.

balance

age of account| $0-$499 | >= $500 |

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less than 3 years |700|500|

>= 3 years|200|600|

Then probability P(>= 3 years) =

a. 0.4

b. 6/11

c. none of these

d. 2/9