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MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A detection device is used to monitor the level of carbon monoxide (CO) in the air. The following data, in ppm (parts per million) were collected from a single location inside a recreation facility: 7.28 6.98 8.50 5.56 9.13 7.34 7.98 5.56 8.18 4.03 8.69 9.05 This data is also on Statcrunch under the group data as, Carbon Monoxide (CO) in the air. Questions: a) Identify the variable in this data. b) Compute the sample mean, median, and sample standard deviation, rounded to 3 decimal places. c) Are there outliers in this data set? To determine this, first compute the lower and upper outlier boundaries. Include these in answer. Show your work or explain how you obtained the outlier boundaries. d) Compute a 95% confidence interval (use 3 decimal places) for the population mean carbon monoxide level in the air in this location. Write the answer using the format: lower boundary< u < upper boundary e) Interpret the 95% confidence interval in the context of the problem.
Transcribed Image Text:A detection device is used to monitor the level of carbon monoxide (CO) in the air. The following data, in ppm (parts per million) were collected from a single location inside a recreation facility: 7.28 6.98 8.50 5.56 9.13 7.34 7.98 5.56 8.18 4.03 8.69 9.05 This data is also on Statcrunch under the group data as, Carbon Monoxide (CO) in the air. Questions: a) Identify the variable in this data. b) Compute the sample mean, median, and sample standard deviation, rounded to 3 decimal places. c) Are there outliers in this data set? To determine this, first compute the lower and upper outlier boundaries. Include these in answer. Show your work or explain how you obtained the outlier boundaries. d) Compute a 95% confidence interval (use 3 decimal places) for the population mean carbon monoxide level in the air in this location. Write the answer using the format: lower boundary< u < upper boundary e) Interpret the 95% confidence interval in the context of the problem.
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