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Discrete Mathematics With Applicat...

5th Edition
EPP + 1 other
ISBN: 9781337694193

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BuyFindarrow_forward

Discrete Mathematics With Applicat...

5th Edition
EPP + 1 other
ISBN: 9781337694193
Textbook Problem
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Suppose that on a true/false exam you have no idea at all about the answers to three questions.You choose answers randomly and therefore have a 50-50 chance of being correct on any one question. Let CCW indicate that you were correct on the first two questions and wrong on the third, let WCW indicate that you were wrong on the first and third questions and correct on the second, and so forth.

  1. List the elements in the sample space whose outcomes are all possible sequences of correct and incorrect responses on your part.
  2. Write each of the follow mg events as a set and find its probability:
  3. (i) The event that exactly one answer is correct.
    (ii) The event that at least two answers are correct.
    (iii) The event that no answer is correct.

To determine

(a)

To write:

The eight elements in the sample space whose outcome are all the possible genders of three children.

Explanation

Given:

A family is having three children and having a boy and girl is equally likely.

Calculation:

There are 8 possible resul...

To determine

(b)

To find:

The Probability that,

(i) The event that exactly one answer is correct.

(ii) The event that at least two answers are correct.

(iii) The event that no answer is correct

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