A jar contains 4 red marbles, numbered 1 to 4, and 12 blue marbles numbered 1 to 12. part a) A marble is chosen at random. If you're told the marble is red, what is the probability that it has the number 2 on it? part b) The first marble is replaced, and another marble is chosen at random. If you're told the marble has the number 1 on it, what is the probability the marble is red?

A jar contains 4 red marbles, numbered 1 to 4, and 12 blue marbles numbered 1 to 12. part a) A marble is chosen at random. If you're told the marble is red, what is the probability that it has the number 2 on it? part b) The first marble is replaced, and another marble is chosen at random. If you're told the marble has the number 1 on it, what is the probability the marble is red?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

d) If I choose a customer at random, and it turns out that they are interested in History, what is the probability that they are also interested in Music?e) What is the probability that a customer is interested in Science or Music?
If a child is given cards with A, C, D, G, 0, and T on them, what is the probability he or she could spell DOG by guessing the correct arrangement of 3 cards?
In a group of dogs, 20 dogs are poodles and 30 dogs are beagles. If a dog is selected at random, what is the probability a beagle is selected?
b. Rehnuma has a set of three special coins. For the first, second and third coin, probability of getting a head is 50%, 75% and 100% respectively. If one coin is tossed randomly and you get head, what is the probability of the coin being two headed?
Bowl A contains two white and one red chips; bowl B contains two red chips , and bowl C contains one red chip and one white chip. A bowl is selected at random, and one chip is taken at random from that bowl. If the selected chip is white, what is the probability that the other chip in the bowl is red?
A pet store has 12 puppies, including 4 poodles, 4 terriers, and 4 retrievers. If Rebecka and Aaron, in that order, each select one puppy at random without replacement, find the probability that Aaron selects a retriever, given that Rebecka selects a poodle. The probability is (Type an integer or a fraction.)
A bag contains 100 tickets numbered 1,2....,100. If one ticket is picked at random, the probability that the number on the ticket is divisible by 2 or 3 is
Fred has 4 place settings consisting of a dinner plate, a salad plate, and a bowl. Each setting is a different color. If Fred randomly selects a dinner plate, a salad plate, and a bowl, what is the probability that they all have different colors? The probability is
If there are 2 green marbles, 5 blue marbles, and 3 red marbles in a black velvet bag. What is the probability that a person randomly selects either a green or a red marble? O 0.3 O 0.5 O 0.7 O 0.8
. Box A contains 5 red and 3 white marbles and box B contains 2 red and 6 white marbles. If a marble is drawn from each box, what is the probability that they are both of some color.
A deck consists of playing cards that can have one of 16 suits and one of 5 ranks. A hand is a set of five cards randomly selected from the deck. How many hands are a four of a kind (four cards with the same rank but different suits, and a fifth card that is a different rank from the other four)? What is the probability of the hand being a four of a kind?
In a town of 800 citizens, two languages are spoken: Italian and and French. 400 citizens speak at least one language. 240 speak Italian and 320 speak French. One citizen is selected at random. If one citizen speaks Italian, what is the probability the same citizen speaks French?