Suppose that when a new machine is functioning well, 92% of the items produced are non-defective. Assume that a random sample of five parts produced on the machine is selected and we are interested in...

Suppose that when a new machine is functioning well, 92% of the items produced are non-defective. Assume that a random sample of five parts produced on the machine is selected and we are interested in the number of defective parts found.
Required:
a) What are the conditions for this experiment to be considered a binomial experiment? Motivate.
b) What is the probability that all parts selected will be defective?