A survey revealed that 21.5% of the households had no checking account, 66.9% had regular checking accounts, and 11.6% had NOW accounts. Of those households with no checking account 40% had savings accounts. Of the households with regular checking accounts 71.6% had a savings account. Of the households with NOW accounts 79.3% had savings accounts.
The probability that a randomly selected household has a savings account is:
(0.4)(0.215) + (0.716)(0.669) + (0.793)(0.116) = ....
Originally Posted by jax760