4. Circuit boards are assembled by selecting 4 computer chips at random from a large batch of chips. In this batch of chips, 90 percent of the chips are acceptable. Your job is to check randomly selected chips one by one, replacing each chip after you have checked, until you nd a defective chip. a) Determine if this is a binomial or geometric setting and explain how you know. (Check BINS or BITS) b) What is the probability that it will take up to 4 chips before the fnst unacceptable chip is found? 5. A blind taste test will be conducted with 11 volunteers to determine whether people can taste a difference between bottled water and tap water. Each participant will taste the water from two different glasses and then identify which glass he or she thinks contains the tap water. Assuming that people cannot taste a difference between bottled water and tap water, what is the probability that at least 8 of the '11 volunteers will correctly identify the tap water