Problem 126c
Page 214
Section: BRINGING IT TOGETHER: HOMEWORK
Chapter 3: Probability Topics
Given information
Given that when the Euro coin was introduced in 2002, two math professors had their statistics students test whether the Belgian one Euro coin was a fair coin. They spun the coin rather than tossing it and found that out of 250 spins, 140 showed a head (event H) while 110 showed a tail (event 7). On that basis, they claimed that it is not a fair coin.
The main objective is to use the tree to find the probability of obtaining exactly one head in two tosses of the coin.
Step-by-step explanation
From the given data, if the total possible outcomes of the experiment is 250, and the favourable outcomes of getting a head is 140, and the favourable outcomes of getting a tail is 110.
The formula to find the probability of an event A is defined as 
.
Then, the probabilities of getting a head and tails when a coin is tossed once are:
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Introductory Statistics
Solutions
Chapter
Section
- Problem 117
- Problem 118a
- Problem 118b
- Problem 118c
- Problem 118d
- Problem 119a
- Problem 119b
- Problem 119c
- Problem 120a
- Problem 120b
- Problem 120c
- Problem 121a
- Problem 121b
- Problem 121c
- Problem 121d
- Problem 121e
- Problem 122a
- Problem 122b
- Problem 122c
- Problem 122d
- Problem 122e
- Problem 123
- Problem 123a
- Problem 123b
- Problem 123c
- Problem 123d
- Problem 123e
- Problem 123f
- Problem 123g
- Problem 124a
- Problem 124b
- Problem 124c
- Problem 125a
- Problem 125b
- Problem 125c
- Problem 125d
- Problem 126a
- Problem 126b
- Problem 126c
- Problem 126d
- Problem 127a
- Problem 127b
- Problem 127c
- Problem 127d
- Problem 127e
- Problem 127f
- Problem 127g
- Problem 128a
- Problem 128b
- Problem 128c
- Problem 128d