Trucks that travel on highways have to stop at various locations to be weighed and inspected for safe brakes and light systems. Of these trucks, 79% are on interstate commerce while 21% are intrastate. Of the intrastate trucks, 2.3% are flagged for safety defects compared to 0.4% of those that are on interstate business. Complete parts a through c below.

a. Calculate the probability that a randomly chosen truck is an interstate truck and is not flagged for a safety violation.

The probability is

b. What is the probability that a randomly chosen truck does not have a safety defect?

The probability is

c. If two trucks are chosen randomly, determine the probability that only one of the two does not have a safety defect.

The probability is