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OpenStudy (anonymous):
***CHECK MY ANSWERS*** A bag contains 2 white marbles and 7 purple marbles. Two marbles are drawn at random. One marble is drawn and not replaced. Then a second marble is drawn. a. What is the probability of selecting a purple marble and then a white marble? 7/9*2/8=7/36
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OpenStudy (anonymous):
I'm pretty sure that's right.
OpenStudy (anonymous):
@mtbender74
OpenStudy (anonymous):
wait.
OpenStudy (anonymous):
yeah. It's correct.
OpenStudy (anonymous):
Can you check part b?
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OpenStudy (anonymous):
I'll try. :)
OpenStudy (anonymous):
b. What is the probability of selecting two white marbles? 2/9*1/8=1/36
OpenStudy (anonymous):
Good job! It's correct. :)
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