Question

Determine whether the given procedure results in a binomial distribution. If not, state the reason why. Choosing 10 marbles from a box of 40 marbles (20 purple, 12 red, and 8 green) one at a time with replacement, keeping track of the number of red marbles chosen

Answer 1

There is a fixed number of independent trials (10). Each trial has only two possible outcomes; pick a red marble or pick a marble that is not red. Each trial has a constant probability of picking a red marble.
Do these sound like the conditions for a binomial distribution?