Question

11. For the binomial distribution, which one of the following is true?

A. We conduct as many repeated trials as needed to obtain a specified number of successes.

B. The outcome of each trial is affected by the outcomes of the trials before it.

C. The probability of success must be the same for all trials.

D. B and C are both true

Answer 1

A Binomial distribution is all about trials with two possible outcomes of which one could be called as "success" and another could be called as "failure". Each trial has a certain probability of resulting in success (say, with probability 0<p<1) or, resulting in a failure (with probability q = 1-p). An outcome of a trial does not depend on outcome of any other trial. The outcome of each trial is independent of the other.

Hence, the correct choice is : C. The probability of success must be same for all trials.