Game wardens use experiments to help determine the number of raccoons in a forest. Suppose 60 raccoons are caught, tagged, and released back into the forest. Two weeks later 40 raccoons are caught, of which 4 are found to have tags. Estimate the number of raccoons in the forest.
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2,400 raccoons
56 raccoons
600 raccoons
96 raccoons
2,400 raccoons
2. A bag contains 4 yellow marbles and 6 green marbles. Two marbles are drawn at random. One marble is drawn and not replaced. Then a second marble is drawn. What is the probability that the first marble is green and the second one is yellow?
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4/15
1/15
3/2
1/6
2/15
3. A bag contains 2 red marbles and 4 green marbles. Two marbles are drawn at random. One marble is drawn and not replaced. Then a second marble is drawn. What is the probability that the first marble is green and the second one is red?
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2
2/15
4/15
1/4
1/6
4. A coin is tossed and a number cube is rolled. What is the probability that the coin shows heads and the number cube shows an odd number?
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1/4
1/12
1
1/6
1/4
5. A number cube is rolled 300 times and the results recorded: 48 ones, 53 twos, 42 threes, 51 fours, 50 fives, and 56 sixes. What is the experimental probability of NOT rolling a five?
0.07
0.83
0.17
0.93
0.83
6. Which events are independent?
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You choose 2 different ice cream flavors.
You study English 20 min nightly, then you get an A on the next test.
You draw a card from a deck, replace it and draw a second.
You draw a card and don't replace it. Then you draw another