Question

instead of 2 tire burst, use 3 and 5 landing gears

1. A new light civilian aircraft is being developed by Cessna. This design utilizes 4 landing-gear tires. Experience shows that tire bursts occur, on average, on 1 landing in 1200. Assuming that tire bursts occur independently of one another, and that a safe landing can be made if not more than 2 tire bursts occur, what is the probability of an unsafe landing? Assume a Binomial distribution for this investigation.

Answer 1

Answen P= 1 |1200 P(unsafe landing) - P(x>a) = p(x=3) +P(x=4 ) = c(4,3) * ('/20) 13 8 (1-1/1200)"1 +c(4,4)*('/120o)^4 * (1 - 1/1200)^o = 0.00000000000048