Question

Juan runs a company that makes pens. He notices that 1 out of every 9 pens are faulty. He uses a standard deck of cards to model the situation, with all the 10s representing faulty pens. Which statement about his model is true?

Answer 1

answer choices (please post these next time)

A) His model can be improved the most by removing all face cards from the deck.
B) His model can be improved the most by removing all the face cards and aces from the deck.
C) His model cannot be improved.

Answer 2

in the real life situation, 1/9 pens are faulty. therefore, his model should also have a 1/9 probability of getting a 10 card, since 10 cards represent faulty pens.

however, in a standard deck of cards, the probability of getting a 10 card is 4/52 which is not equal to 1/9. how can he change the probability to 1/9? review answer choices A and B and see which choice leads to the desired probability.