Question

For
binomial variable of
20 Bernoulli trials 2p=3q.
Find mean and variance​

Answer 1

Step-by-step explanation:

p:q = 3:2

p=3/5

q = 2/5

n= 20

mean of bernoulli distribution

= p = 3/5

variance of bernoullidistribution

= pq = 3/5×2/5 =6/25

mean of binomial distribution = np

= 20×3/5 = 12

variance of binomial distribution = npq

=20×3/5×2/5 = 120/25 = 24/5 = 4.8