   Chapter 14.2, Problem 7E ### Algebra and Trigonometry (MindTap ...

4th Edition
James Stewart + 2 others
ISBN: 9781305071742

#### Solutions

Chapter
Section ### Algebra and Trigonometry (MindTap ...

4th Edition
James Stewart + 2 others
ISBN: 9781305071742
Textbook Problem

# 7 − 20 Probability by Counting These exercises involve finding probabilities by counting.An experiment consists of tossing a coin twice.(a) Find the sample space.(b) Find the probability of getting heads exactly two times.(c) Find the probability of getting heads at least one time.(d) Find the probability of getting heads exactly one time.

To determine

(a)

To find:

The sample space.

Explanation

Approach:

An experiment consists of tossing a coin twice.

As coin has two faces and tossed twice then it gives 4 outcomes.

So, the sample space (S) is,

S={HH,HT,TH,TT}

To determine

(b)

To find:

The probability of getting heads exactly two times.

To determine

(c)

To find:

The probability of getting heads at least one time.

To determine

(d)

To find:

The probability of getting heads exactly one time.

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