a jar contains 20 white marbles, 30 red marbles and 15 green marbles. 4. Draw one marble at random. What is the probability that the marble is red? 6 6. (a) 구 (b) 13 3 (c) 13 4 (d) 13
a jar contains 20 white marbles, 30 red marbles and 15 green marbles. 4. Draw one marble at random. What is the probability that the marble is red? 6 6. (a) 구 (b) 13 3 (c) 13 4 (d) 13
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 2ECP: a. You toss three coins. What is the probability that all three land tails up? b. You draw one card...
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Transcribed Image Text:a jar contains 20 white marbles, 30 red marbles and 15 green
marbles.
4. Draw one marble at random. What is the probability that the marble is red?
6
(a)
7
(b)
13
3
(c)
13
4
(d)
13
5. Suppose you draw one marble and notice that it is green. Without replacing the first
marble, draw a second marble. What is the probability that the second marble is red?
15
(a)
13
(b)
32
18
45
(c)
169
(d)
416
6. Draw two marbles at random. What is the probability that both are green?
21
21
(a)
416
(b)
832
9
10
(c)
169
(d)
13
7. Draw two marbles at random. What is the probability that one is red and one is green?
45
9
(a)
208
(b)
13
18
45
(c)
169
(d)
104
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