43. A university has to select an examiner from the list of 50persons 20 of them women and 30 men, 10 of them knowing Hindi and 40 not, 15of them being teachers and the remaining 35 not. What is the probability of theuniversity selecting a Hindi knowing woman teacher ?

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Answered: 43. A university has to select an…

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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5. A bag contains 20 purple marbles, 15 red marbles, and 5 blue marbles. What is the probability of randomly selecting a purple marble, not putting it back, and then randomly selecting a blue marble? (Express your answer as a decimal rounded to two places.)
4. What is the probability of getting either a three or a four on at least one the two dice?
2. A student selected froma class will be either a boy or a girl. If the probability that a boy will be selected is 0.3, what is the probability that a girl will be selected?
3. Among the products of the first company, defective is 10%, the second - 20%, the third - 25%. We bought 6 products from the first company, 8 from the second and 4 from the third. For verification, one product was tested. Find the probability that it is valid.
11.) A shipment of 11 printers contains 2 that are defective. Find the probability that a sample of 4, drawn from the 11, will not contain a defective printer.
4. On average 10 people per second enter through one of the central doors of a Metro car, during a busy time. a) What is the probability that more than 4 people per second enter through one of the central doors of a Metro car?b) What is the probability that between 9 and 12 people per second enter through one of the central doors of a Metro car?
On a test to obtain a securities license there are 10 questions with possible answers A, B, C, D, & E with probability of getting the correct answer is 70%. A student is taking this test , what is the probability of getting at least 4 correct by guessing on the 10?
7. A container has 5 red dice, 3 green dice and 4 black dice. If you randomly pick 2 marbles from the bag. one at a time, what is the probability that both will be red?
Three students from a 14 student class will be selected to attend a meeting. 9 of the students are female. What is the probability that all three of the students chosen to attend the meeting are female? =
9) According to the American Academy of Ophthalmology, there is a 18% chance that someone will have hazel eyes. What is the probability that it will take at least seven people to find someone with hazel eyes?
16. Ten percent of the students at a certain college are non-resident. A reporter for the student paper would like to interview at least 5 non-residents. If the reporter randomly selects 100 names from the student directory and begins contacting them, what is the probability that she will contact at least 5 non-resident students?

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43. A university has to select an examiner from the list of 50 persons 20 of them women and 30 men, 10 of them knowing Hìndi and 40 not, 15 of them being teachers and the remaining 35 not. What is the probability of the aniversity selecting a Hindi knowing woman teacher ?