Three professors administer a common examwithout technical problem to their classes of 40students each. Suppose that 32 of the students inclass A, 30 of the students in class B, and 30 of thestudents in class C pass the exam. If a student whohas passed the exam is chosen at random, what isthe probability that the student is in class A?

Answered: Image /qna-images/answer/5b4ff5c6-264f-4d35-b53c-79d7df549da2.jpg

Answered: Three professors administer a common…

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...

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Similar questions

A class consisting of 4 graduate students and 12 undergraduate students is randomly divided into four groups of 4. What is the probability that each group includes a graduate student?
in their closet a pack rat has 7 pairs of boots plus 4 other boots which are unpaired as their match had been thrown in the trash. if they reach into their closet and grab a boot at random what is the probability that the matching boot is in their closet?
Urn A contains 3 white and 4 red balls. Urn B contains 4 white and 5 black. If an urn is chosen at random and a ball is drawn from it, what is the probability that the ball so drawn is a white one.
is 4 workers per shift. Find the probability that on a particular shift, (i) exactly four workers will remain absent and (ii) more than four workers will remain absent.
Suppose a jar contains 15 red marbles and 10 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same time (same as drawing without replacement), find the probability that both are red.
If 381 individuals have the blood type A+ out of a sample of 1000 individuals. what is the probability that a random individual from Turkey will also have an A+ blood type?
Suppose that there are 5 white marbles, 2 green marbles, 1 red marble are in the container. You are asked to withdraw 3 marbles at a time. Determine the probability that exactly 2 white marbles are withdrawn.
A club of 17 people consists of 9 men and 8 women. A team of 10 is randomly selected from the club. How would I get the probability for the team that consists of 5 men and 5 women.
Bonnie and Connie are twins with identical purses. Bonnie needs 35 cents to pay for a parking meter. Suppose that Bonnie's purse has 5 quarters, 3 dimes, and 2 nickels while Connie's purse has 2 quarters, 5 dimes, and 3 nickels in it. Not being able to tell the difference between the purses, Connie picks one at random and grabs two coins from it. What is the probability that Bonnie picked her own purse given that she drew out enough change to pay for her parking meter? (Note: Bonnie needs to put in at least 35 cents to pay her parking meter.)
A team of five persons are to be selected from a group of 4men, 3 women and 3 childrens. What is the probability that team comprises of exactly two women?
A committee of three people is to be randomly selected from a group of 20 men and 17 women. What is the probability that all three people will be women?
If a fiancial services committee had 60 members, of which 10 were women, if 8 members are selected at random, find the probability that the group of 8 would be composed of 7 men and 1 woman.

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