A box contains r red balls and b blue balls. One ball is selected at random and its color is observed. The ball is then returned to the box and k additional balls of the same color are also put in the box. A second ball is then selected at random, Its color is observed & it's returned to the box together with k additional balls of the same color. Each time another ball is selected, the process is repeated. If four balls are selected, whats the probability that the first three balls will be red and the fourth be blue?

Q: A committee consists of 4 men and 5 women. Three members are to be selected at random to form a…

A: Given that  Committee consists of  4 Men and 5 Women  Then we have to choose 3 members to be…

Q: Two cards are drawn at random from an ordinary deck of 52 playing cards one at a time with…

A: Two cards are drawn at random from an ordinary deck of 52 playing cards one at a time with…

Q: If you roll to fair dice (one black die and one white die), in how many ways can you obtain a 6 on…

A: # If you roll to fair dice (one black die and one white die), in how many ways can you obtain a 6 on…

Q: In order to conduct an​ experiment, 5 subjects are randomly selected from a group of 48 subjects.…

A: The total number of subjects is 48 and the size of the group of subjects to be selected is 5, so use…

Q: There is money to send four of nine city council members to a conference in Honolulu. All want to…

A: Combinations: The number of combinations of r items selected from n items is, nr=n!n-r! There…

Q: There is money to send four of seven student council members on a trip to Washington DC. All want to…

A: Given Information: Number of members = 7  Number of members to be send for trip = 4

Q: The numbers on a dice (a single dice) are covered by 6 different letters of the alphabet. Four of…

A:

Q: You and your team have built a chess computer. To investigate how well it performs, you organise a…

A: To Test the null hypothesis that two proportions or binomial parameters are equal. That is, the test…

Q: A man just bought 6 suits, 11 shirts, and 15 ties. All of these suits, shirts, and ties coordinate…

A: Theory of Combination:

Q: Each of 400 people who purchased a Honda Civic was classified according to gender and whether the…

A:

Q: In the box shown below, each ticket should have two numbers: [ (1,  ) , (1, 3) , (1, 3), (2, 5),…

A: Given the available pairs: [(1, ), (1, 3), (1, 3), (2, 5), (2, ___ ), (2, 3)] We need to fill in the…

Q: 600 students at Drew High School were surveyed. 269 of them were males. 455 of the students' wear…

A: Part a: Probability = Number of Males/Number of students =269/600 = 0.448

Q: In order to conduct an​ experiment, 5 subjects are randomly selected from a group of 50 subjects.…

A: According to the provided information, 5 subjects are randomly selected from a group of 50 subjects.…

Q: Two marbles are drawn from a bag that is 3 red, 4 purple, and 2 black. Find the probability that you…

A:

Q: In a box there are 3 red, 4 blue, and 5 white marbles.  If 3 marbles are selected at random and the…

A: Given that there are 3 red, 4 blue and 5 white marbles. Three marbles are selected at random and the…

Q: person, Joe, claims to be able to "smell" an illness based on the odor of a person's clothing. Joe…

A: Given that  n=12 , p=1/2=0.5 , q=1-0.5=0.5 X~Binomial(n=12,p=0.5) p=Probability guessing  X=Number…