Binomial Distribution

Question 1

How can you know it’s a binomial distribution

Answer 1

TINS

Two outcomes for each trial

Independence of trials

Number of trials is fixed

Same probability of success

Question 2

Is binomial valid if the mean and variance are similar to the expected mean and variance

Answer 2

Yes

Question 3

How do you work out expected mean

Answer 3

N x P

Question 4

How do you work out expected variance

Answer 4

N x p x(1-p)