Probability questions on drawing chips
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An urn contains 8 red chips, 10 green chips, and 2 white chips. A chip is drawn and replaced, and then a second chip drawn.
What is the probability of:
a) a white chip on the first draw?
b) a white chip on the first draw and a red on the second?
c) two green chips drawn?
d) a red chip on the second, given that a white chip was drawn on the first?
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Solution Summary
The solution answers probability questions about drawing chips.
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There are 20 chips total.
a) Since there are 2 white chips out of 20 total chips, you have a 2/20 (or 1/10 = 0.10 = 10%) chance of picking a white chip.
For the next three questions, it's important to notice that the question says that after the first chip is drawn, it is put back in the urn before ...
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