MATLAB: A Practical Introduction to Programming and Problem Solving
5th Edition
ISBN: 9780128163450
Author: ATTAWAY
Publisher: ELSEVIER
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Chapter 5, Problem 27E
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Question 5
10 pts 1 Details
A college administrator claims that 80% of college students purchase their books from the campus
bookstore. You this is inaccurate and form a random sample of 57 students at that college and find that 36
of them purchased their books from the bookstore. Test the administrator's claim using a level of
significance of 1%.
a. What type of test will be used in this problem?
A test for a proportion
b. What evidence justifies the use of this test? Check all that apply
np5 and nq > 5
The population standard deviation is not known
The original population is approximately normal
There are two different samples being compared
The sample size is larger than 30
The sample standard deviation is not known
The population standard deviation is known
c. Enter the null hypothesis for this test.
Ho p
0.80
d. Enter the alternative hypothesis for this test.
H₁p
0.80
e. Is the original claim located in the null or alternative hypothesis?
Null Hypothesis
f. What is the test…
Are there less children diagnosed with Autism Spectrum Disorder (ASD) in states that have larger urban
areas over states that are mostly rural?
Assume data were collected from a fairly urban state and they found 195 eight-year olds diagnosed with
AGD out of 18183 eight-year olds evaluated.
Assume data were then collected for a fairly rural state and they found 54 eight-year olds diagnosed with
AGD out of 2179 eight-year olds evaluated.
is there enough evidence to show that the proportion of children diagnosed with ASD in the fairly urban
state is lower than the proportion in the fairly rural state?
a.) Test at the 3% level
b.) Compute a 97% confidence interval for the difference in proportions.
Use the following steps for the hypothesis test.
For the confidence interval you do not need to do all the steps since you did some of them already in
hypothesis test.
Part a.) HYPOTHESIS TEST
Parameter
What is the correct parameter symbol and wording for population 1?
P
The proportion of all…
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.
Chapter 5 Solutions
MATLAB: A Practical Introduction to Programming and Problem Solving
Chapter 5, Problem 5.1PChapter 5, Problem 5.2PChapter 5, Problem 5.3PChapter 5, Problem 5.4PChapter 5, Problem 5.5PChapter 5, Problem 5.6PChapter 5, Problem 5.7PChapter 5, Problem 5.8PChapter 5, Problem 5.9PChapter 5, Problem 5.10P
Chapter 5, Problem 1EChapter 5, Problem 2EChapter 5, Problem 3EChapter 5, Problem 4EChapter 5, Problem 5EChapter 5, Problem 6EChapter 5, Problem 7EChapter 5, Problem 8EChapter 5, Problem 9EChapter 5, Problem 10EChapter 5, Problem 11EChapter 5, Problem 12EChapter 5, Problem 13EChapter 5, Problem 14EChapter 5, Problem 15EChapter 5, Problem 16EChapter 5, Problem 17EChapter 5, Problem 18EChapter 5, Problem 19EChapter 5, Problem 20EChapter 5, Problem 21EChapter 5, Problem 22EChapter 5, Problem 23EChapter 5, Problem 24EChapter 5, Problem 25EChapter 5, Problem 26EChapter 5, Problem 27EChapter 5, Problem 28EChapter 5, Problem 29EChapter 5, Problem 30EChapter 5, Problem 31EChapter 5, Problem 32EChapter 5, Problem 33EChapter 5, Problem 34EChapter 5, Problem 35EChapter 5, Problem 36EChapter 5, Problem 37EChapter 5, Problem 38EChapter 5, Problem 39EChapter 5, Problem 40EChapter 5, Problem 41EChapter 5, Problem 42EChapter 5, Problem 43EChapter 5, Problem 44EChapter 5, Problem 45E
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