During a certain six year period the consumer price index cpi increased by 50%, but during the next six year period, it increased by 30%. which of these condition must have existed during the second six year period?

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