# Math Help - Probability Question 2

1. ## Probability Question 2

Is this also a binomial question?

Coast Guard inspectors have found 16 percent of all lifeboats o large cruise ships have a faulty latch release. A large cruise ship has 73 lifeboats. What is the probability that 9 or more of the lifeboats have a faulty latch release.

2. It seems so, but with n large you can approximate it rather well with a normal approximation.

3. so n=73?

4. We would need to assume independence between the latches.

n=73 p=P(successs=have a faulty latch release)=.16

You want $P(X\ge 9)=1-P(X\le 8)=1-F(8)$