MATLAB: A Practical Introduction to Programming and Problem Solving
5th Edition
ISBN: 9780128163450
Author: ATTAWAY
Publisher: ELSEVIER
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Chapter 12, Problem 22E
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In 1912 the luxury liner Titanic struck an iceberg and sank on its first voyage. Some passengers got off the ship in lifeboats, but many died. Here is information about who lived and who
died, by gender.
Men
Women
Total
Died
680
126
806
Survived
168
317
485
Total
848
443
1291
Now look at the data set comparing gender and survival.
1. Suggest two tests you can do to see if there is a relationship.
2. For each test, clearly formulate the null and alternative hypothesis. Make sure to define any parameters you used when setting up the null and alternative hypothesis.
When there are two independent samples to compare
two population means,
if we don't know that the population variances are
equal, then
it does not matter because there are paired
samples.
do not assume population variances are equal.
assume population variances are equal.
none of these.
Does it take less time for seeds to germinate if they are near rock music that is continuously playing
compared to being near classical music?
The time (in days) to germinate was recorded for 30 seeds that were randomly exposed to rock music took
and 26 seeds that were randomly exposed to classical music.
a. Based on the given information, select ALL that are true about these data.
There are two independent random samples of numerical data.
Samples are not random.
There are two paired random samples of numerical data.
Each sample size is large enough.
Each population has a normal distribution.
At least one sample size is not large enough.
Data are not numerical.
Each sample data have approximately a normal distribution with no outliers.
b. Are all the assumptions met for a two-sample t-test?
Yes
O No
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Chapter 12 Solutions
MATLAB: A Practical Introduction to Programming and Problem Solving
Chapter 12, Problem 12.1PChapter 12, Problem 12.2PChapter 12, Problem 1EChapter 12, Problem 2EChapter 12, Problem 3EChapter 12, Problem 4EChapter 12, Problem 5EChapter 12, Problem 6EChapter 12, Problem 7EChapter 12, Problem 8E
Chapter 12, Problem 9EChapter 12, Problem 10EChapter 12, Problem 11EChapter 12, Problem 12EChapter 12, Problem 13EChapter 12, Problem 14EChapter 12, Problem 15EChapter 12, Problem 16EChapter 12, Problem 17EChapter 12, Problem 18EChapter 12, Problem 19EChapter 12, Problem 20EChapter 12, Problem 21EChapter 12, Problem 22EChapter 12, Problem 23EChapter 12, Problem 24EChapter 12, Problem 25EChapter 12, Problem 26EChapter 12, Problem 27EChapter 12, Problem 28EChapter 12, Problem 29E
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