The number of fraudulent credit card uses in a large store follows a Poisson process with a rate of ???? = 3 per day. The store is open 12 hours each day (except Sundays).

(i) What is the expected number of frauds during a week, i.e. in six working days?

(ii) If the average cost of a fraud is $240, what is the expected cost that will be incurred as a result of fraudulent credit card use between 12:00 noon and 4:30 p.m. on a particular day?