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addison has 15 fewer pieces of candy than ronny does.

is this situation modeled by an expression or equation? how do you know?

a. equation, because you don't know how much candy either of them has.

b. expression, because it doesn't say equal in the situation.

c. equation, because addison's candy is equal to 15 less than ronny's candy.

d. expression, because addison has less candy than ronny.

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?