69. A candidate is interviewed for 3 posts. For the first post, there are 3 candidates, forthe secothu there are 4, and for the third there are 2. What are the chances of his getting at least one posr?

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Answered: 69. A candidate is interviewed for 3…

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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Suppose we want to estimate the proportion of the Helena population who have used marijuana within the last month. We select 4328 participants and ask them each to first privately draw a card from a standard 52-card deck. If they get a “club” they are asked to respond truthfully to the question “Have you used marijuana within the last month?”If they get any other suit they are asked to respond to the question “Does your phone number end in an odd digit?”The study is blinded in the sense that the researcher doesn’t know which question the participant is answering. Hence, participants are guaranteed anonymity and are more likely to be truthful in their responses. The researchers only get a “yes” or “no” answer from each respondent and don’t know the actual results of the card draw. What is the expected probability of a person’s phone number ending in an odd digit? What is the expected probability of a person’s phone number not ending in an odd digit?
The probability of someone getting covid positive is 0.6, the probability of someone dying suddenly given that he/she is covid positive is 0.3 and the probability of someone dying suddenly given that he/she is not covid positive is 0.1. Let’s say, someone just died. a. What is the probability that the person was covid positive?b. What is the probability that the person was not covid positive
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69. A candidate is interviewed for 3 posts. For the first post, there are 3 candidates, for the secotfo there are 4, and for the third there are 2. What are the chances of his getting at least one pos?