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Suppose 5 balls are drawn simultaneously from an urn containing 5 red and 6 white balls. Find the probability that at least 3 will be red balls.?
Wiki User
∙ 11y ago
Slightly under 50% - (.4925, to be exact).
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Another opinion.
The probability that 3 balls are red is;
P(3R,2W) =
(5/11)(4/10)(3/9)(6/8)(5/7)[5!/(3!2!)] =
0.324675...
The probability that 4 balls are red is;
P(4R,1W) =
(5/11)(4/10)(3/9)(2/8)(6/7)[5!/(4!1!)] =
0.064935...
The probability that 5 balls are red is;
P(5R) =
5!6!/11! =
0.0021645...
The probability that at least 3 will be red balls is;
P(at
least 3R) =
P(3R,2W) + P(4R,1W) + P(5R) ~ 0.3918 ~ 39.2%
Wiki User
∙ 11y ago
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A bag containing 4 green 6 black 7 white balls a ball is drawn at randomly probability of finding 2 red balls?
The probability is zero, because there are no red balls in the bag.
3 red and 4 blue balls are in a basket A member of PPTeam is drawing balls from the basket What is the probablity of getting the 3 red balls simultaneously?
The probability is 3/7 * 2/6 * 1/5 = 1/35.
If you draw 5 balls with replacement from an urn containing white balls and black balls is the probability of getting 3 white balls always higher than if you draw the balls without replacement?
The probability of getting 3 white balls in a draw of 5 balls with replacement from an urn containing white balls and black balls is always greater than the same test without replacement, because the number of white balls decreases when you draw a white ball and do not replace it. The ratio of white to black with replacement is constant, and is always less than one, assuming there is at least one black ball. The ratio of white to black without replacement decreases each turn, and is still less than one, and is less than the previous ratio, unless the question asked about 2 white balls or less.
If an urn contains 6 yellow balls 3 red balls and 5 blue balls If 2 balls are drawn without replacement what is the probability of drawing 2 yellow balls?
The probability is (6/14)*(5/13) = 30/182 = 0.1648 approx.
If A box contains three black balls and four gold balls Two balls are randomly drawn in succession from the box If there is no replacement what is the probability that both balls are black?
(3/7)*(2/7)=(6/49) You have a 6 out of 49 probability.
A bag containing 4 green 6 black 7 white balls a ball is drawn at randomly probability of finding 2 red balls?
The probability is zero, because there are no red balls in the bag.
What is the probability of getting a red balls from an urn containing 2 red 3 green and 2 white balls?
2/7 = 28.57%
What is the probability of picking a red ball out of a bag containing 3 red balls 4 blue balls and 6 green balls?
3 out of 13 or 3/13
One ball is drawn at random from a bag containing 17 red balls and 4 white balls what is the probability that the ball is red?
17 out of 21
3 red and 4 blue balls are in a basket A member of PPTeam is drawing balls from the basket What is the probablity of getting the 3 red balls simultaneously?
The probability is 3/7 * 2/6 * 1/5 = 1/35.
Can the probability of an outcome be 1?
Yes, it certainly can if there is only one possible outcome. For instance, the probability of drawing a red ball from a bag containing nothing but red balls is equal to one.
What is the chance of drawing a red ball from a bag containing 3 red and 2 white balls?
The probability is 1 if you draw three balls without replacement. If only one draw, it is 3/5.
What are questions you could ask about probability?
If I have 3 red balls 3green balls 2 white balls & 5black all in one sack what is the probability of finding a white ball?
If you draw 5 balls with replacement from an urn containing white balls and black balls is the probability of getting 3 white balls always higher than if you draw the balls without replacement?
The probability of getting 3 white balls in a draw of 5 balls with replacement from an urn containing white balls and black balls is always greater than the same test without replacement, because the number of white balls decreases when you draw a white ball and do not replace it. The ratio of white to black with replacement is constant, and is always less than one, assuming there is at least one black ball. The ratio of white to black without replacement decreases each turn, and is still less than one, and is less than the previous ratio, unless the question asked about 2 white balls or less.
8 identical balls are placed at random in three bags. what is the probability that the first bag will contain 3 balls?
The probability that it contains exactly 3 balls is 6/45 = 0.133... recurring.
7 red balls 4 white balls 7 orange balls what is the probability of picking the same color 2 out of 3 times?
the same probability as me shaging your ma tonight gigity
When jar contains 6 blue balls 8 red balls and 6 yellow balls 2 balls selected without replacement.what is probability that first ball is red and second ball is blue?
If the balls are selected at random, then the probability is 12/95.
