SOLUTION: Robbie choses a card from a standard deck of cards (52 cards). The probability of picking a face card (A, K, Q, or J) is 30%. If he performs this experiment 260 times, replacing an

Question 1206812: Robbie choses a card from a standard deck of cards (52 cards). The probability of picking a face card (A, K, Q, or J) is 30%. If he performs this experiment 260 times, replacing and reshuffling the card each time, predict the number of of times he will choose a face card?
A)20 TIMES
B)80 TIMES
Found 2 solutions by Theo, ikleyn:
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
the probability of picking a face card (A, K, Q or J) = 4 * 4 = 16 / 52 = .307 which we'll round off to .30 for purposes of this problem.

assuming the probability is .30, then he should get a face card approximately .30 * 20 = 6 times out of 20 tries and he should get a face card approximately .30 * 80 = 24 times out of 80 tries.

6 / 20 = .30.
24 / 80 = .30.

the numbers are different but the ratio remains the same.

Answer by ikleyn(52898) (Show Source): You can put this solution on YOUR website!

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