An urn contains 12 white balls and 14 yellow balls. If you draw 4 balls without replacement, what is the probability of drawing 4 white balls?
An urn contain total=12 white balls + 14 yellow balls = 26 balls
We can use here combination rule for draw 4 balls without replacement from white balls .
draw 4 balls without replacement from total balls .
Therefore, by using definition of probability.
=0.0331
An urn contains 12 white balls and 14 yellow balls. If you draw 4 balls without...
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1. From an urn, 10 balls with replacement are selected, the urn contains 14 white balls and 5 red balls. Calculate the probability that less than 3 red balls have come out. 2. From an urn, 10 balls are selected with replacement, the urn contains 14 white balls and 14 red balls. Calculate the probability that at least 3 red balls have come out. 3. From an urn 5 balls without replacement are selected, the urn contains 11 balls, of...
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