The laptops made by the XYZ Corporation have a probability of 0.10 of being defective as they come out of the assembly line. The ABC company has purchased 8 of these laptops for office use.
a. What is the PMF of K, the number of defective laptops out of the 8 that the ABC company purchased?
b. What is the probability that at most one laptop is defective out of the 8?
c. What is the probability that exactly 1 laptop is defective out of the 8?
d. What is the expected number of defective laptops out of the 8?