- a car manufacturer plant has three shifts working on the assembly line. The morning shift produces 38% of the total production; the afternoon shift produces 34%; and the evening shift 28%. Of their output 3%, 2%, 1%, respectively, do not pass quality control. If a vehicle is selected at random from the inventory and found defective, what is the probability that it was manufactured by:
a) morning shift (Given Answer: 0.543)
b) afternoon shift (Given Answer: 0.324)
c) evening shift (Given Answer: 0.133)
- A small town has a network of 115 residential streets, all containing approximately the same number of residents. If a canvasser randomly selects 20 people from the phone book to promote a product, what is the probability that at least two of the people live on the same street?
(Given Answer: 0.827)