Which set of ordered pairs represents a function?

a) {(0, 1), (1,3), (1,5), (2, 3)}

b) {(0, 0), (1, 2), (2, 6), (2, 3)}

c) {(0, 0), (0, 2), (2.0), (2, 4)}

d) {(0.2), (1, 4), (2.6), (3, 6)}

Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?