Concept explainers
(a)
To find:The probability of at least two tails.
(a)
Answer to Problem 9WE
The probability of at least two tails is
Explanation of Solution
Given information:
The given information is three coins are tossed.
Calculation:
It is given that three coins are tossed. We will first write the
There are
The sample space for getting at least two tails is
Thus there are 4 favorable outcomes
Therefore, the probability of at least two tails
(b)
To find:The probability of at least one toss comes up heads.
(b)
Answer to Problem 9WE
The probability of at least one toss comes up heads
Explanation of Solution
Given information:
The given information is three coins are tossed.
Calculation:
It is given that three coins are tossed. We will first write the sample space for such an event.
There are
The sample space for getting at least one head is
Thus there are 4 favorable outcomes
Therefore, the probability of at least one toss comes up heads
Chapter 15 Solutions
Algebra and Trigonometry: Structure and Method, Book 2
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