Probability
An urn initially contains 5 white and 7 black
balls. Each time a ball is selected its color is noted and it is replaced in the urn along with 2 other balls with the same color
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3.14. An urn initially contains 5 white and 7 black balls. Each time a ball is...
3.14. An urn initially contains 5 white and 7 black balls. Each time a ball is selected, its color is noted and it is replaced in the urn along with 2 other balls of (a) the first 2 balls selected are black and the next 2 are white (b) of the first 4 balls selected, exactly 2 are black.
1. An urn initially contains 6 red and 8 green balls. Each time a ball is...
1. An urn initially contains 6 red and 8 green balls. Each time
a ball is selected, its color is recorded, and it is replaced in
the urn along with 2 other balls of the same color. Compute the
probability that:
(a) The first 2 balls selected are green and the next 2 are
red?
(b) Of the first 4 balls selected, exactly 2 are green?
(c) If the second ball selected is green, what is the
probability that the...
An urn contains 3 red balls, 2 blue balls, and 5 white balls. A ball is...
An urn contains 3 red balls, 2 blue balls, and 5 white balls. A ball is selected and its color noted. Then it is replaced. A second ball is selected and its color noted. Find the probability of: Selecting 2 blue balls (round to 4 decimal places)
An urn initially contains r red balls and s black balls. A ball is selected at random but not rem...
An urn initially contains r red balls and s black balls. A ball is selected at random but not removed and a balls of the same color as the selection are added to the urn. The process is then repeated with a balls of one color or the other added to the urn at each epoch. With each addition the population of the urn increases by a and it is helpful to imagine that the (a) What is the probability...
Suppose the urn has 7 red balls and 3 black balls initially, as before; but now...
Suppose the urn has 7 red balls and 3 black balls initially, as before; but now suppose that at each draw the color of the ball drawn is noted and the ball is replaced in the urn, together with another ball of the same color. Are the draws independent? Find P(R1),P(R2),and P(R3).
An urn contains 5 red, 6 blue, and 8 green balls. A. if a set of...
An urn contains 5 red, 6 blue, and 8 green balls. A. if a set of 3 balls is randomly selected, what is the probability that each of the balls will be the same color? b. if a set of 3 balls is selected but each time a ball is drawn the color is noted and the ball returned, what is the probability the balls will be the same color?
An urn contains 10 white and 6 black balls. Balls are randomly selected, one at a...
An urn contains 10 white and 6 black balls. Balls are randomly selected, one at a time, until a black one is obtained. If we assume that each ball selected is replaced before the next one is drawn, what is the probability that a) exactly 5 draws are needed? b) at least 3 draws are needed?
An urn contains 7 white balls and 3 black balls. Two balls are selected at random...
An urn contains 7 white balls and 3 black balls. Two balls are selected at random without replacement. What is the probability :1 The first ball is black and the second ball is white.? 2: One ball is white and the other is black? 3:the two balls are white ?
An urn contains 4 white balls and 6 red balls. A second urn contains 6 white...
An urn contains 4 white balls and 6 red balls. A second urn contains 6 white balls and 4 red balls. An urn is selected, and the probability of selecting the first urn is 0.8. A ball is drawn from the selected urn and replaced. Then another ball is drawn and replaced from the same urn. If both balls are white, what are the following probabilities? (Round your answers to three decimal places.) (a) the probability that the urn selected...
3. * One urn contains one black ball and one red ball. A second urn contains...
3. * One urn contains one black ball and one red ball. A second urn contains one white ball and one red ball. One ball is selected at random from each urn (a) Exhibit the sample space ? for this experiment. (b) Show the subset of ? that defines the event A that both balls will be of the same color. (c) Assume each elementary outcome in 2 is equally likely to occur. What is the probability that both balls...
3.14. An urn initially contains 5 white and 7 black balls. Each time a ball is selected, its color is noted and it is replaced in the urn along with 2 other balls of (a) the first 2 balls selected are black and the next 2 are white (b) of the first 4 balls selected, exactly 2 are black.
1. An urn initially contains 6 red and 8 green balls. Each time
a ball is selected, its color is recorded, and it is replaced in
the urn along with 2 other balls of the same color. Compute the
probability that:
(a) The first 2 balls selected are green and the next 2 are
red?
(b) Of the first 4 balls selected, exactly 2 are green?
(c) If the second ball selected is green, what is the
probability that the...
An urn initially contains r red balls and s black balls. A ball is selected at random but not removed and a balls of the same color as the selection are added to the urn. The process is then repeated with a balls of one color or the other added to the urn at each epoch. With each addition the population of the urn increases by a and it is helpful to imagine that the (a) What is the probability...
3. * One urn contains one black ball and one red ball. A second urn contains one white ball and one red ball. One ball is selected at random from each urn (a) Exhibit the sample space ? for this experiment. (b) Show the subset of ? that defines the event A that both balls will be of the same color. (c) Assume each elementary outcome in 2 is equally likely to occur. What is the probability that both balls...
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