Question

An urn contains 12 white and 21 black balls. Balls are drawn one by one, without...

An urn contains 12 white and 21 black balls. Balls are drawn one by one, without replacement, until 4 black balls are drawn. Find an expression for the probability that the total number of balls drawn is x.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

The solution to this problem is given below

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
An urn contains 12 white and 21 black balls. Balls are drawn one by one, with...
An urn contains 12 white and 21 black balls. Balls are drawn one by one, with replacement, until 4 white balls are drawn. Find an expression for the probability that the total number of balls drawn is x.
An urn contains 15 white and 21 black balls. Balls are drawn one by one, without...
An urn contains 15 white and 21 black balls. Balls are drawn one by one, without replacement, until 6 white balls are drawn. Find an expression for the probability that the total number of balls drawn is x.
From an urn containing 3 white and 2 black balls, two balls are drawn one after...
From an urn containing 3 white and 2 black balls, two balls are drawn one after the other without replacement. What is the probability that the first ball drawn is white and the second black?
An urn has 12 balls. 8 are white balls and 4 are black balls. If we...
An urn has 12 balls. 8 are white balls and 4 are black balls. If we draw a sample of 3 balls (i.e., picking without replacement) and given that the first two balls selected were a black ball and a white ball, what is the conditional probability of the third ball drawn being white?
An urn contains 1 white, 2 black, 3 red, and 4 green balls. If 6 balls...
An urn contains 1 white, 2 black, 3 red, and 4 green balls. If 6 balls are selected randomly (without replacement) and X represents the number of selections that are either red or green, find: (a) the probability mass function for X. (b) the expected value of X (calculate this value directly by using the probability mass function from part a).
A box contains 20 black balls and 80 white ones. One hundred balls are drawn at...
A box contains 20 black balls and 80 white ones. One hundred balls are drawn at random with replacement. Find the expected number of black ball among the draws.
1.an urn containing 9 black,12 white and 15 red balls is randomly divided into 3 baskets...
1.an urn containing 9 black,12 white and 15 red balls is randomly divided into 3 baskets containing 12 balls each.what is the probability that each basket will have the same number of black balls? 2.cards are drawn at random from an ordinary deck of 52,one by one without replacement.what is the probability that no king is drawn before the ace of spades is drawn?
A box contains 10 red balls and a single black ball. Balls are drawn (one at...
A box contains 10 red balls and a single black ball. Balls are drawn (one at the time) without replacing until the black ball is drawn. Let X = number of balls drawn before the black ball is drawn. Find the p.m.f, the expected value and the standard deviation of X.
An urn contains 3 white balls and 7 red balls. A second urn contains 7 white...
An urn contains 3 white balls and 7 red balls. A second urn contains 7 white balls and 3 red balls. An urn is selected, and the probability of selecting the first urn is 0.2. 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...
Given 3 urns, one contains 2 black balls, the second contains 2 white balls, and the...
Given 3 urns, one contains 2 black balls, the second contains 2 white balls, and the third contains 1 ball of each color. An urn is chosen at random and a ball is drawn from it -- the ball is white. What is the probability that the other ball in that urn is also white?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT