A class in advanced physics is comprised of 20 juniors, 30 seniors and 10 graduate students. The final grades showed that 5 of thejuniors, 12 of the seniors, and 6 of the graduate students received an A for the course. If a student from this class is selected and isfound to have earned an A, what is the probability that he or she is a junior?Ans is Blank 1Blank 1Add your answer

Given problem Given that A class in advanced physics is comprised of 20 juniors , 30 seniors and…

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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 cookie is selected at random from a basket containing 10 peanut butter cookies, 8 caramel cookies, 12 sugar cookies, and 20 mint cookies. Find the probability that a peanut butter cookie is selected.
An urn contains 3 white balls and 7 red balls. A second urn contains 8 white balls and 2 red balls. An urn is selected, and a ball is randomly drawn from the selected urn. The probability of selecting the first urn is 0.8. If the ball is white, find the probability that the second urn was selected. (Round your answer to three decimal places.)
Suppose that the probability that a child living in an urban area in the United States is obese is 20%. If a social worker sees 15 children living in urban areas, what is the probability that 5 are obese? Enter response as .xxxx
Use the following information to answer the next question. A committee of 3 people is to be randomly selected from a group of 8 people, including Sarah. 12. Determine the probability that Sarah is selected to be on the three-person committee.
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An urn contains five white balls and six red balls. The second urn contains 8 white balls and four red balls. An urn is selected and a ball is randomly drawn from the selected urn. The probability of selecting the first urn is .75. If the ball is red, find the probability that the second urn was selected.
A group of people were asked if they had run a red light in the last year. 312 responded "yes", and 236 responded "no". Find the probability that if a person is chosen at random, they have run a red light in the last year.
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