Binomial distribution

Question 1

What is a discrete uniform distribution?

Answer 1

Where the probability of all outcomes are equal

Question 2

When do we use binomial distribution?

Answer 2

1. Fixed number of trials
2. Two outcomes
3. Trials are independent
4. Fixed probability

Question 3

What adds to 1 in binomial distributions?

Answer 3

All probabilities add to 1

Question 4

What is the binomial distibution model

Answer 4

X ~ B (n, p)
n= number of trials
p = probability

Question 5

Binomial distribution: finding p(x=r) manually with (n trials)

Answer 5

(nCr) pʳ (1-p)ⁿ⁻ʳ

ex. when n=10 and p=0.4
p(x=3) =
10C3 (0.4)³ (0.6)⁷