Question 12
5 pts
The probability of a bus arriving on time at a particular bus station is 0.71. It is assumed that bus arrivals are independent of one another. In the next 10 arrivals, what is the
probability that 7 of the buses arrive on time?
Question 13
5 pts
When circuit boards used in the manufacture of compact disc players are tested, the long run percentage of defectives is 5.9%. A simple random sample of 24 circuit boards has
been tested. What is the probability that there will be 3 or fewer defectives ?