1.Suppose the mean income of firms in the industry for a year is50million dollars with a standard deviation of17million dollars. If incomes for the industry are distributed normally, what is the probability that a randomly selected firm will earn less than87million dollars? Round your answer to four decimal places.

2.The auto parts department of an automotive dealership sends out a mean of4.7special orders daily. What is the probability that, for any day, the number of special orders sent out will be exactly3? Round your answer to four decimal places.

3.A pharmacist receives a shipment of15bottles of a drug and has4of the bottles tested. If3of the15bottles are contaminated, what is the probability that no more than1of the tested bottles is contaminated? Express your answer as a fraction or a decimal number rounded to four decimal places.