Question

If a binomial trial has a probability of success of 0.7 how many successes would you expect out of 2000 trials

Answer 1

Mean or expected value (μ ) = 1400

Explanation:

Step(i):-

Given that the probability of success p = 0.7

Given number of trials n = 2000

Let 'X' be the random variable in binomial distribution

Now , we have to find the mean or expected value of the binomial distribution

Step(ii):-

Mean = n p

μ = 2000× 0.7

μ = 1400