MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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![Two random samples of 30 individuals were selected. One sample participated in an activity which simulates hard work. The average breath rate of these individuals was 19 breaths per minute. The other sample did some normal walking. The mean breath rate of these individuals was 12. Find the 95% confidence interval of the difference in the breath rates if the population standard deviation was 4.2 for breath rate per minute. Use \( \mu_1 \) for the mean breath rate of individuals stimulated with hard work. Round the answers to one decimal place.
[ ] < \( \mu_1 - \mu_2 \) < [ ]
(Note: The image contains a space for entering the numerical values for the confidence interval.)](https://content.bartleby.com/qna-images/question/4bc92d6f-8141-453b-b1aa-15dddf73f72d/10c8163a-60e1-4f18-996b-897123f3f70e/5pjjjv9_processed.jpeg)
Transcribed Image Text:Two random samples of 30 individuals were selected. One sample participated in an activity which simulates hard work. The average breath rate of these individuals was 19 breaths per minute. The other sample did some normal walking. The mean breath rate of these individuals was 12. Find the 95% confidence interval of the difference in the breath rates if the population standard deviation was 4.2 for breath rate per minute. Use \( \mu_1 \) for the mean breath rate of individuals stimulated with hard work. Round the answers to one decimal place.
[ ] < \( \mu_1 - \mu_2 \) < [ ]
(Note: The image contains a space for entering the numerical values for the confidence interval.)
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