# Question: A large study done by researchers at the New Jersey

A large study done by researchers at the New Jersey School of Medicine reports that 10% of the eyes that undergo LASIK corrective surgery need to be retreated. A nearby clinic performed LASIK surgery on 15 patients (30 eyes) last week. Assuming that all the binomial conditions are met, use the binomial table to deter-mine the probability that

a. One eye in this group of 30 needs retreatment.

b. At least three eyes need retreatment.

c. No more than four eyes need retreatment.

d. Between two and five eyes (inclusive) need retreatment.

a. One eye in this group of 30 needs retreatment.

b. At least three eyes need retreatment.

c. No more than four eyes need retreatment.

d. Between two and five eyes (inclusive) need retreatment.

## Answer to relevant Questions

Seven percent of the units manufactured by Bartlett and Sousa have at least one flaw: 4% are too thick, 5% are too rough, and 2% percent are both too thick and too rough. You randomly select one of the units. Define ...In a study of high school graduation rates, Wisconsin had the highest graduation rate among all the states, at 90%. This compares to graduation rates of 75% for Texas high schools and 70% for Alabama high schools. Assume ...Use the Poisson probability function to determine the following probabilities: a. For λ = 2, P(x = 5) b. For λ = 6, P(x = 2) c. For λ = 3.5, P(x = 0) d. For λ = 2, P(2 < x < 4) Meteor showers can be a spectacular sight. They are especially intense in late July and early August, when the annual Perseid meteor shower is visible in the early morning sky. As many as 50 to 150 meteors per hour are ...Use the Poisson table to approximate the following binomial probabilities: a. P(x = 2) when n = 50, p = .1 b. P(x = 5) when n = 300, p = .02 c. P(x = 1) when n = 500, p = .005Post your question