En bulbs are randomly selected without replacement from a lot of bulbs some of whichare defective.
(a) if we assume that there are an infinite number of bulbs in the lot and5%of themare defective. what is the probability that at least 2 out of the 10 selected aredefective?
(b) if we know that the lot has not infinite but 120 bulbs, and 12 of them are defective, what is the probability that at least 1 out of the 10 selected is defective?

m∠a is 90°

m∠b is 40°

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)

i would think "anyone would want the best for their child" is correct