Binomial distribution

Question 1

Quick venn diagram Q

1. How to get Probability of a and B. when given P of a and probability of b and probailibty of neither

Answer 1

p(a n b) = p(a)+p(b) - p(a or b)

p(a or b) = 1- probability of not a or b

Question 2

What are 4 conditions for binomial distribution

Answer 2

fixed number of n trials

there are two possible outcomes (success and failiure)

there is fixed probability of success

trials are independent of each other

Question 3

binomial distribuition formula

Answer 3

P(X=r) = NCR p^r (1-p)^n-r

Question 4

What is a prime number

Answer 4

its factors are 1 and itself only.

Question 5

What is a odd number

Answer 5

when divided by 2, it leaves a remainder

1,3,5,7,9 etc