The probability that students will not attend 0, 1, or 2 times a semester is 0.50, 0.30, and 0.2, respectively. If 30 randomly selected student's attendances are tabulated, what is the probability that 15 will have no absences, 9 will have one absence, and 6 will have two absences?

4.7%

None of the above

22%

2.98%

50%

If 5% of the cars that roll off the assembly line are defective, what is the probability that in a shipment of 200 cars, there are fewer than 5 defective cars?

5%

20%

4.2%

2.64%

None of the above

Find the area under the standard normal distribution curve to the right of a z value of z=1.6.

5.48%

10%

None of the above

1.64%

94.52%