(a(i))[2]
Calculate the probability that the machine rejects both coins.
(a(ii))[1]
Calculate the probability that the machine accepts at least one coin.
(b)[3]
Calculate the probability that the machine rejects exactly one coin.
(c)[4]
Calculate an estimate of the mean amount of money received each day.
(d(i))[1]
Calculate the number of cars that were parked for 100 minutes or less.
(d(ii))[2]
Calculate the percentage of cars that were parked for more than 250 minutes.