MATLAB: A Practical Introduction to Programming and Problem Solving
5th Edition
ISBN: 9780128154793
Author: Stormy Attaway Ph.D. Boston University
Publisher: Elsevier Science
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 8, Problem 2E
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Proctor
ents
ources
Sources
button below for
formula and a similar problem.
A researcher believes a new diet will have a positive impact on the health of adult lab mice but the effects
on the weight of the mice are unknown.
A sample of 10 mice was obtained and the mice were weighed before and after the diet treatment. Listed
below are the measurement results:
Click this button to reveal the data. Click again to collapse it.
Mouse
Before(g) After(g)
Difference(g)
1
37.8
37.5
0.3
2
38.2
37.6
0.6
3
36.6
35.2
1.4
4
36.6
35.4
1.2
5
37.6
37.1
0.5
6
38.1
37.3
0.8
7
36.4
35
1.4
8
35.9
34.6
1.3
9
35.3
34.9
0.4
10
40.1
39.2
0.9
Click this button to reveal the summary of data. Click again to collapse it.
Average
Standard deviation
Before(g) After(g) Difference(g)
37.26
1.39
36.38
1.55
0.88
0.42
Click Download CSV to download csv file of data or copy/paste the data into Excel. After downloading the
file, you may want to save it as an Excel Workbook.
Use 5% level of significance to decide whether…
Does 10K running time increase when the runner listens to music? Nine runners were timed as they ran a
10K with and without listening to music. The running times in minutes are shown below.
With
Music
Without
Music
Running Time
57 40 39 60 58 47 50 42 45
58 36 39 51 56 50 52 41 41
Assume a Normal distribution. What can be concluded at the the a 0.10 level of significance?
For this study, we should use t-test for the difference between two dependent population means
o search
a. The null and alternative hypotheses would be:
Houd
0
(please enter a decimal)
H₁ ud
0
(Please enter a decimal)
b. The test statistic
=
(please show your answer to 3 decimal places.)
c. The p-value
(Please show your answer to 4 decimal places.)
d. The p-value is >v
a
e. Based on this, we should fail to reject
f. Thus, the final conclusion is that ...
the null hypothesis.
The results are statistically significant at a = 0.10, so there is sufficient evidence to conclude
M365
UP
T
DOLL
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…
Chapter 8 Solutions
MATLAB: A Practical Introduction to Programming and Problem Solving
Chapter 8, Problem 8.1PChapter 8, Problem 8.2PChapter 8, Problem 8.3PChapter 8, Problem 8.4PChapter 8, Problem 8.5PChapter 8, Problem 1EChapter 8, Problem 2EChapter 8, Problem 3EChapter 8, Problem 4EChapter 8, Problem 5E
Chapter 8, Problem 6EChapter 8, Problem 7EChapter 8, Problem 8EChapter 8, Problem 9EChapter 8, Problem 10EChapter 8, Problem 11EChapter 8, Problem 12EChapter 8, Problem 13EChapter 8, Problem 14EChapter 8, Problem 15EChapter 8, Problem 16EChapter 8, Problem 17EChapter 8, Problem 18EChapter 8, Problem 19EChapter 8, Problem 20EChapter 8, Problem 21EChapter 8, Problem 22EChapter 8, Problem 23EChapter 8, Problem 24EChapter 8, Problem 25EChapter 8, Problem 26EChapter 8, Problem 27EChapter 8, Problem 32EChapter 8, Problem 33EChapter 8, Problem 34EChapter 8, Problem 35EChapter 8, Problem 36EChapter 8, Problem 37E
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Similar questions
- 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…arrow_forwardIn 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.arrow_forwardWhen 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.arrow_forward
- 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 > Next Question to search UP T M365 F2 F3 F4 <400 2 144 64 $ DELL F5 F6 F7 F8 ►11 25 %arrow_forward4 Cor The following data show the results of two random samples that measured the average number of minutes per charge for AA Lithium-ion (Li-ion) rechargeable batteries versus Nickel-Metal Hydride (NiMH) rechargeable batteries. Click this button to reveal the data. Click again to collapse it. Li-ion NiMH 107 86 95 91 87 89 84 88 89 88 98 87 95 86 85 90 84 91 96 85 97 87 100 89 86 91 102 89 87 94 78 arch If you want to do well, please avoid using Google sheets. Perform a hypothesis test using significance level (a) = .02 to determine if the true average number of minutes per charge for NiMH batteries is different from that for Li-ion batteries. a. Perform a two-sample t test to test the claim that the true average number of minutes per charge for Li-ion batteries is different from that for NiMH batteries. Fill in the blanks for the alternative hypothesis of this test. Select an answer Select an answer Based on your work, answer the following questions. The observed difference in mean…arrow_forwardmts ces urces A group of economists wants to compare the mean annual leave among the US and EU workers. Two samples of US and EU workers were obtained independently and analyzed. The sample of 45 US workers had the mean annual leave of 18.8 days and the standard deviation 9.05 days. The sample of 31 EU workers had the mean annual leave of 25.6 days and the standard deviation 5.38 days. Use 4% level of significance to decide whether there is sufficient evidence that mean annual leave of US workers is less than mean annual leave of EU workers. Procedure: Two means T Hypothesis Test Assumptions: (select everything that applies) Normal populations The number of positive and negative responses are both greater than 10 for both samples Population standard deviations are known Simple random samples Population standard deviation are unknown and not assumed equal Sample sizes are both greater than 30 Independent samples Paired samples Population standard deviation are unknown but assumed equal…arrow_forward
- How do the assumptions and characteristics of the linear regression model influence the reliability and robustness of inference drawn from its results in diverse research scenarios?arrow_forwardA group of economists wants to compare the mean annual leave among the US and EU workers. Two samples of US and EU workers were obtained independently and analyzed. The sample of 45 US workers had the mean annual leave of 18.8 days and the standard dediation 9.05 days. The sample of 31 EU workers had the mean annual leave of 25.6 days and the standard deviation 5.38 days. Use 4% level of significance to decide whether there is sufficient evidence that mean annual leave of US workers is less than mean annual leave of EU workers. Procedure: Select an answer Assumptions: (select everything that applies) Normal populations The number of positive and negative responses are both greater than 10 for both samples Population standard deviations are known Simple random samples Population standard deviation are unknown and not assumed equal Sample sizes are both greater than 30 Independent samples Paired samples Population standard deviation are unknown but assumed equal Part 1: Hypothesis Test..…arrow_forwardA group of economists wants to compare the average annual leave among the US and EU workers. Two samples of US and EU workers were obtained independently and analyzed. The sample of 37 US workers had the average annual leave of 18 days and the standard deviation 9.07 days. The sample of 40 EU workers had the average annual leave of 26.8 days and the standard deviation 5.11 days. Use 10% level of significance to decide whether there is sufficient evidence that average annual leave of US workers is less than average annual leave of EU workers. Procedure: Two means T Hypothesis Test Assumptions: (select everything that applies) Population standard deviations are known Population standard deviation are unknown but assumed equal Independent samples Paired samples The number of positive and negative responses are both greater than 10 for both samples Sample sizes are both greater than 30 Population standard deviation are unknown and not assumed equal Normal populations Simple random samples…arrow_forward
- LEAVE! A group of economists wants to compare the average annual leave among the US and EU workers. Two samples of US and EU workers were obtained independently and analyzed. The sample of 37 US workers had the average annual leave of 18 days and the standard deviation 9.07 days. The sample of 40 EU workers had the average annual leave of 26.8 days and the standard deviation 5.11 days. Use 10% level of significance to decide whether there is sufficient evidence that average annual leave of US workers is less than average annual leave of EU workers. Procedure: Two means T Hypothesis Test Assumptions: (select everything that applies) Population standard deviations are known Population standard deviation are unknown but assumed equal Independent samples Paired samples D The number of positive and negative responses are both greater than 10 for both samples Sample sizes are both greater than 30 Population standard deviation are unknown and not assumed equal Normal populations Simple random…arrow_forwardFall 2025 Home C Canvas - Homework 6 Secure Exam Proctor Proctorio) Announcements Modules A group of economists wants to compare the mean annual leave among the US and EU workers. Two samples of US and EU workers were obtained independently and analyzed. The sample of 34 US workers had the mean annual leave of 14.7 days and the standard deviation 7.95 days. The sample of 32 EU workers had the mean annual leave of 23.5 days and the standard deviation 3.86 days. Use 10% level of significance to decide whether there is sufficient evidence that mean annual leave of US workers is less than mean annual leave of EU workers. Procedure: Two means T Hypothesis Test くくる Discussions eople Grades enji brary Resources ampus Resources Assumptions: (select everything that applies) Independent samples simple random samples Population standard deviations are known Normal populations The number of positive and negative responses are both greater than 10 for both samples Population standard deviation are…arrow_forwardoctor es ces A group of economists wants to compare the mean annual leave among the US and EU workers. Two samples of US and EU workers were obtained independently and analyzed. The sample of 34 US workers had the mean annual leave of 14.7 days and the standard deviation 7.95 days. The sample of 32 EU workers had the mean annual leave of 23.5 days and the standard deviation 3.86 days. Use 10% level of significance to decide whether there is sufficient evidence that mean annual leave of US workers is less than mean annual leave of EU workers. Procedure: Two means T Hypothesis Test Assumptions: (select everything that applies) Independent samples Simple random samples Population standard deviations are known Normal populations The number of positive and negative responses are both greater than 10 for both samples Population standard deviation are unknown but assumed equal Paired samples Sample sizes are both greater than 30 Population standard deviation are unknown and not assumed equal…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
College Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage Learning
Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill
Trigonometry (MindTap Course List)TrigonometryISBN:9781337278461Author:Ron LarsonPublisher:Cengage Learning
Elementary AlgebraAlgebraISBN:9780998625713Author:Lynn Marecek, MaryAnne Anthony-SmithPublisher:OpenStax - Rice University
College Algebra (MindTap Course List)
Algebra
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:Cengage Learning
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Trigonometry (MindTap Course List)
Trigonometry
ISBN:9781337278461
Author:Ron Larson
Publisher:Cengage Learning
Elementary Algebra
Algebra
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:OpenStax - Rice University
Algebraic Complexity with Less Relations; Author: The University of Chicago;https://www.youtube.com/watch?v=ZOKM1JPz650;License: Standard Youtube License
Strassen's Matrix Multiplication - Divide and Conquer - Analysis of Algorithm; Author: Ekeeda;https://www.youtube.com/watch?v=UnpySHwAJsQ;License: Standard YouTube License, CC-BY
Trigonometric Equations with Complex Numbers | Complex Analysis #6; Author: TheMathCoach;https://www.youtube.com/watch?v=zdD8Dab1T2Y;License: Standard YouTube License, CC-BY