A file cabinet manufacturer estimates that 5% of its file cabinets will have drawers that close improperly. Assume a production run of 120 cabinets is completed.
a.What is the mean and standard deviation of this distribution?
b.What is the probability that 7 or more are defective?
c.What is the probability that exactly 7 cabinets are defective?
d.What is the probability that there are more than 8 defective file cabinets?