In: Statistics and Probability
Printed circuit cards are placed in a functional test after
being populated with semiconductor chips. Suppose...
Printed circuit cards are placed in a functional test after
being populated with semiconductor chips. Suppose that there are 8
blue credit cards, 6 red credit cards and 4 blue debit cards in a
box. It is known that color and card type are to be independent
when a card is selected at random from this box.
a) How many red debit cards must be present?
b) Suppose that, 5 cards are randomly selected in a row
without replacement. What is the probability that 3 blue credit
cards and 2 blue debit cards are selected?
c) Suppose that, 5 cards are randomly selected in a row with
replacement. What is the probability that 3 blue credit cards and 2
blue debit cards are selected?