Assume a jar has 7 red marbles and 5 black marbles. Draw out 2 marbles with and without replacement. Find the requested probabilities.
(a) P(2 red marbles)
With replacement , without replacement .
(b) P(2 black marbles)
With replacement , without replacement .
(c) P(one red and one black marble)
With replacement , without replacement .
(d) P(red on the first draw and black on the second draw)
With replacement , without replacement .

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a. With replacement. for the first draw how many red marbles are there in the jar?

9

The jar has 7 red marbles and 5 black marbles. Explain how you got 9?

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