1. ## Binomial distribution.

At XYZ high school there is a 18% drop-out rate for seniors. If six seniors are randomly selected, what is the probability that one will drop out of high school?

2. ## Re: What is the probability [Help Please]

Sounds like a binomial question to me.

P(1) = 6C1 (0.18)^1(1-0.18)^(6-1)

3. ## Re: What is the probability [Help Please]

Can it be like this:
E = np
1 = 6 x p
p = 1/6

4. ## Re: What is the probability [Help Please]

No, that is the expected value of how many students out of 6 will drop out, which will be

np = 6 x 0.18 = 1.08, you are after the probability of 1 student dropping out when there are 6 students.

5. ## Re: Binomial distribution.

Thank you...got it....