Solve for the probability of each event. Write your answers as a reduced fraction. In one section of tenth graders, 28% are good in declamation and 15% are good in both oration and declamation. Find the probability that when a student is chosen at random, he is good in oration given that he is also good in declamation.

Solve for the probability of each event. Write your answers as a reduced fraction. In one section of tenth graders, 28% are good in declamation and 15% are good in both oration and declamation. Find the probability that when a student is chosen at random, he is good in oration given that he is also good in declamation.

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

In a lottery game, a player picks five numbers from 1 to 48. If 4 of the 5 match the winning numbers, then the player wins the second prize.What is the probability of winning the second prize?Write your answer as a simplified fraction
Find the probability of getting 4 face cards (king, queen, or jack) when 4 cards are drawn from a deck without replacement, Enter your answer as a fraction. P(4 face cards) olo
A bag contains 9 marbles: 2 are green 5 are red and 3 are blue. Chris chooses a marble at random and without putting it back choose another one at random. What is the probability that the first marble is blue and the second is green? Write answer as a fraction in simplest form
A spinner has 10 equally sized sections, 8 of which are gray and 2 of which are blue. The spinner is spun twice. What is the probability that the first spin lands on gray and the second spin lands on blue ? Write your answer as a fraction in simplest form.
A bag contains 9 marbles: 2 are green, 4 are red, and 3 are blue. Ryan chooses a marble at random, and without putting it back, chooses another one at random. What is the probability that both marbles he chooses are blue? Write your answer as a fraction in simplest form.
Find the probability that a fan chosen at random drank only soda.Give your answer as a simplified fraction Find the probability that a fan who drank water, did drink any soda. Give your answer as a simplified fraction.
On a 7 question multiple-choice test, where each question has 3 answers, what would be the probability of getting at least one question wrong? Give your answer as a fraction
At bedtime, you read three books to your kids, Walker, Michael, and Luke. Together, they have 32 books. If you decide to randomly choose three books, what is the probability that the three you choose will consist of each of their favorite books? Assume they have different favorites. Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.
A bag contains ten tiles labeled B , C , D , E , F , G , H , I , J , and K . One tile will be randomly picked.What is the probability of picking a vowel? Write your answer as a fraction.
On a 9 question multiple-choice test, where each question has 4 answers, what would be the probability of getting at least one question wrong?Give your answer as a fraction
A bag has 5 blue marbles, 3 red marbles, and 2 green marbles. We draw two marbles, one at a time, with replacement. What is the probability that both draws are red? Write your answer as a simplified fraction.
On a camping trip, Helen kept a log of the types of snakes she saw. She noted their colors and approximate lengths. 1 foot long 2 feet long Red 1 Bright orange Bright green 2 What is the probability that a randomly selected snake is bright green or bright orange? Simplify any fractions.