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What is the chance of drawing a red ball from a bag containing 3 red and 2 white balls?
Wiki User
∙ 10y ago
The probability is 1 if you draw three balls without replacement.
If only one draw, it is 3/5.
Wiki User
∙ 10y ago
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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
What is probability that you pick 3 white balls if you have 3 white balls 1 red ball and 2 green balls?
The probability that you pick 3 white balls is 0.05 or 5%.----------------------------------------------------------------------------------------------------EXPLANATIONThe probability of first drawing a white ball is: P(W1) =3/6.The probability of drawing a white ball given the event that you already draw awhite ball in the first draw and not replacing it back is: P(W2│W1) =2/5.The probability of drawing a white ball on the third draw given the event that awhite ball was drawn in the first and in the second draw is: P(W3│(W1UW2)) =1/4Now, the probability of drawing 3 white balls one by one with out replacement(taking all 3 balls at a time gets the same analysis and result) is:P(W1UW2UW3) =P(W1)∙P(W2│W1)∙P(W3│(W1UW2)) =(3/6)∙(2/5)∙(1/4) =1/20=0.05 =5%.
What are the odds in favor of choosing a white marble from a bag containing 3 black marbles 4 green marbles and 6 white marbles?
The probability of drawing a white marble is .46
A marble is drawn at random first from a jar containing four black and four white marbles and then from a jar containing six black and two white marbles What is the probability of drawing two black?
It is (4/8)*(6/8) = 3/8
A bag contains 6 black and 3 white balls Another bag contains 5 black and 4 white balls If one ball is drawn from each bag find the probability that these two balls are of the same color?
14/27 ~ 0.519 ~ 51.9%----------------------------------------------------------------------------------------------------EXPLANATIONFor bag 1: Probability of drawing a black ball; P(B1) =6/9. A white one; P(W1) =3/9For bag 2: P(B2) =5/9. P(W2) =4/9.Probability of drawing a black ball from each bag: P(B1UB2) =(6/9)∙(5/9) =10/27Probability of drawing a white ball from each bag: P(W1UW2) =(3/9)∙(4/9) =4/27The probability of drawing 2 balls of the same color is the sum of the aboveprobabilities:P(2 same color balls) =P(B1UB2) + P(W1UW2) =10/27 +4/27 =14/27 =0.5185...P(2 same color balls) ~ 0.519 ~ 51.9%
In a binary system how many consequetive outcome A would be needed to show the probability of outcome B is less than 0.25 to 90 percent confidence?
In case I haven't explained that very well here's an example: I have a bag containing black and white balls and I think that one quarter of the balls are black. I start drawing balls from the bag (and putting them back afterwards) and I keep drawing out white balls. If I were continue to pick only white balls how many times would this have to happen before I was 90% sure that less than ¼ balls were black? Thanks
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.
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%
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
What is probability that you pick 3 white balls if you have 3 white balls 1 red ball and 2 green balls?
The probability that you pick 3 white balls is 0.05 or 5%.----------------------------------------------------------------------------------------------------EXPLANATIONThe probability of first drawing a white ball is: P(W1) =3/6.The probability of drawing a white ball given the event that you already draw awhite ball in the first draw and not replacing it back is: P(W2│W1) =2/5.The probability of drawing a white ball on the third draw given the event that awhite ball was drawn in the first and in the second draw is: P(W3│(W1UW2)) =1/4Now, the probability of drawing 3 white balls one by one with out replacement(taking all 3 balls at a time gets the same analysis and result) is:P(W1UW2UW3) =P(W1)∙P(W2│W1)∙P(W3│(W1UW2)) =(3/6)∙(2/5)∙(1/4) =1/20=0.05 =5%.
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 are the odds in favor of choosing a white marble from a bag containing 3 black marbles 4 green marbles and 6 white marbles?
The probability of drawing a white marble is .46
What is the probability of drawing a white ball out of a bag with 2 green 3 white and 5 black?
The probability of a simple event is the number of ways to succeed over the total possibilities. So, there are three white balls, and ten balls total. So: P(white) = 3/10
A marble is drawn at random first from a jar containing four black and four white marbles and then from a jar containing six black and two white marbles What is the probability of drawing two black?
It is (4/8)*(6/8) = 3/8
Box a contains 5 blue balls and 4 white balls. box b has 2 blue and 5 white balls. one ball is drawn at random from box a and transferred to box b without looking. what is the probability of drawing a?
The question cannot be answered because it is incomplete and a complete version cannot be found.
A bag contains 6 black and 3 white balls Another bag contains 5 black and 4 white balls If one ball is drawn from each bag find the probability that these two balls are of the same color?
14/27 ~ 0.519 ~ 51.9%----------------------------------------------------------------------------------------------------EXPLANATIONFor bag 1: Probability of drawing a black ball; P(B1) =6/9. A white one; P(W1) =3/9For bag 2: P(B2) =5/9. P(W2) =4/9.Probability of drawing a black ball from each bag: P(B1UB2) =(6/9)∙(5/9) =10/27Probability of drawing a white ball from each bag: P(W1UW2) =(3/9)∙(4/9) =4/27The probability of drawing 2 balls of the same color is the sum of the aboveprobabilities:P(2 same color balls) =P(B1UB2) + P(W1UW2) =10/27 +4/27 =14/27 =0.5185...P(2 same color balls) ~ 0.519 ~ 51.9%
What is monochrome drawing?
A drawing done in only one color. a black and white drawing is considered monochrome, as the "color" would be black on a white tapestry.
