12 of kyle's friends mow lawns on saturday morning. 3 10 of his friends mow in the morning and afternoon. what fraction of those who mow lawns in the morning also mow in the afternoon? a) 1 4 b) 1 5 c) 3 20 d) 3 5 e) 5 9

The computer that controls a bank's automatic teller machine crashes a mean of 0.6 times per day. what is the probability that, in any seven-day week, the computer will crash less than 5 times? round your answer to four decimal places