Which equations model this problem?
a recipe that makes 1 serving calls for 0.25 l milk. how many servings can rohit make if he uses 2 l of milk?
use s for the number of servings.
choose all answers that are correct.
a.0.25÷ 2=s
b.0.25·s=2
c.2÷0.25=s
d. s÷0.25=2

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?