
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 14, Problem 18E
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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
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…
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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…
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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
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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…
Chapter 14 Solutions
MATLAB: A Practical Introduction to Programming and Problem Solving
Chapter 14, Problem 14.1PChapter 14, Problem 14.2PChapter 14, Problem 14.3PChapter 14, Problem 14.4PChapter 14, Problem 14.5PChapter 14, Problem 14.6PChapter 14, Problem 14.7PChapter 14, Problem 14.8PChapter 14, Problem 14.9PChapter 14, Problem 1E
Chapter 14, Problem 2EChapter 14, Problem 3EChapter 14, Problem 4EChapter 14, Problem 6EChapter 14, Problem 7EChapter 14, Problem 8EChapter 14, Problem 9EChapter 14, Problem 10EChapter 14, Problem 11EChapter 14, Problem 12EChapter 14, Problem 14EChapter 14, Problem 15EChapter 14, Problem 16EChapter 14, Problem 17EChapter 14, Problem 18EChapter 14, Problem 19EChapter 14, Problem 20EChapter 14, Problem 22EChapter 14, Problem 23EChapter 14, Problem 24EChapter 14, Problem 25EChapter 14, Problem 26EChapter 14, Problem 27EChapter 14, Problem 28EChapter 14, Problem 29EChapter 14, Problem 30EChapter 14, Problem 31EChapter 14, Problem 32EChapter 14, Problem 33EChapter 14, Problem 34EChapter 14, Problem 35EChapter 14, Problem 36EChapter 14, Problem 37EChapter 14, Problem 38EChapter 14, Problem 39EChapter 14, Problem 40EChapter 14, Problem 41EChapter 14, Problem 42EChapter 14, Problem 43EChapter 14, Problem 44EChapter 14, Problem 45EChapter 14, Problem 46EChapter 14, Problem 47E
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- octor 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_forwardQuestion 4 ANNUAL LEAVE 2.19/3 pts 29 Part 1 of 6 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: Select an answer 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…arrow_forwardYou may want to use the Excel Two Means Calculator found in the Course to complete this problem. You want to estimate the difference between the mean GPA of day students (Group 1) and the mean GPA of night students (Group 2) with a 94% confidence. A random sample of 13 day students and 14 night students and their GPA's are recorded below. It is reasonable to assume samples represent populations with normal distributions. Click this button to reveal the data. Click again to collapse it. GPA-Day GPA-Night 3.22 3.19 3.36 3.19 3.6 3.1 2.97 3.09 3.11 3.36 2.57 3.18 3.46 3.43 3.01 3.13 3.06 3.15 3.31 3.12 3.22 3.4 3.06 3.27 2.97 3.18 3.38 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. All conditions are met for inference using Two-Sample T-Confidence Interval because there are two independent random samples and populations have normal distributions. Round answers properly to 2…arrow_forward
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