Which expression represents the phrase?

"The quantity of 4 decreased by a, and then halved."

A) 2(4 – a)
B)
a – 4
2
C)
4 – a
2
D)
4 + a
2

A. the probability that a product is defective is 0.1. what is the probability that there will be 1 or less defective products out of the next 8 produced products b.the expected number of imperfections in the coating nylon for parachutes is 6 per 100 yards. what is the probability of finding 12 or fewer imperfections in 260 yards c.in a lot of 54 products there are 9 defective products. calculate the probability that not more than 1 is defective from a random sample of 17 products.