MATLAB: A Practical Introduction to Programming and Problem Solving
5th Edition
ISBN: 9780128154793
Author: Stormy Attaway Ph.D. Boston University
Publisher: Elsevier Science
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Chapter 4, Problem 8E
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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 4 Solutions
MATLAB: A Practical Introduction to Programming and Problem Solving
Chapter 4, Problem 4.1PChapter 4, Problem 4.2PChapter 4, Problem 4.3PChapter 4, Problem 4.4PChapter 4, Problem 4.5PChapter 4, Problem 1EChapter 4, Problem 2EChapter 4, Problem 3EChapter 4, Problem 4EChapter 4, Problem 5E
Chapter 4, Problem 6EChapter 4, Problem 7EChapter 4, Problem 8EChapter 4, Problem 9EChapter 4, Problem 10EChapter 4, Problem 11EChapter 4, Problem 12EChapter 4, Problem 13EChapter 4, Problem 14EChapter 4, Problem 15EChapter 4, Problem 16EChapter 4, Problem 17EChapter 4, Problem 18EChapter 4, Problem 19EChapter 4, Problem 20EChapter 4, Problem 21EChapter 4, Problem 22EChapter 4, Problem 23EChapter 4, Problem 24EChapter 4, Problem 25EChapter 4, Problem 26EChapter 4, Problem 27EChapter 4, Problem 28EChapter 4, Problem 29EChapter 4, Problem 30EChapter 4, Problem 31E
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