Fiona has to choose a bouquet for her wedding. the probability that she uses red roses is 98%, the probability that she uses orchids is 87%, and the probability that she uses gerber daisies is 94%. given the probability that she has both roses and orchids is 0.87 and the probability that she has both gerber daisies and roses is 0.97 what is the probability that her bouquet contains roses or orchids?

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?