A pharmaceutical company makes tranquilizers. It is assumed that the distribution for the length of time they last is approximately normal. Researchers in a hospital used the drug on a random sample of nine patients. The effectiveness periods of the tranquilizer for cach patient (in hours) were as follows: 2.7, 2.8, 3.0, 2.3, 2.3, 2.2, 2.8, 2.1and 2.4. If the error bound is 0.3556, then the level of confidence interval of the mean is: 0.99 0.98 O None of the other options 0.95
A pharmaceutical company makes tranquilizers. It is assumed that the distribution for the length of time they last is approximately normal. Researchers in a hospital used the drug on a random sample of nine patients. The effectiveness periods of the tranquilizer for cach patient (in hours) were as follows: 2.7, 2.8, 3.0, 2.3, 2.3, 2.2, 2.8, 2.1and 2.4. If the error bound is 0.3556, then the level of confidence interval of the mean is: 0.99 0.98 O None of the other options 0.95
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 pharmaceutical company makes tranquilizers. It is assumed that the distribution for the
length of time they last is approximately normal. Researchers in a hospital used the drug
on a random sample of nine patients. The effectiveness periods of the tranquilizer for
each patient (in hours) were as follows: 2.7, 2.8, 3.0, 2.3, 2.3, 2.2, 2.8, 2.1and 2.4. If the
error bound is 0.3556, then the level of confidence interval of the mean is:
O 0.99
0.98
O None of the other options
O 0.95](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F20260596-bf20-44c0-a9c2-cbd1898efcb3%2F196474e7-1074-42e2-becf-47674f39a4e5%2Flnwz0a_processed.png&w=3840&q=75)
Transcribed Image Text:A pharmaceutical company makes tranquilizers. It is assumed that the distribution for the
length of time they last is approximately normal. Researchers in a hospital used the drug
on a random sample of nine patients. The effectiveness periods of the tranquilizer for
each patient (in hours) were as follows: 2.7, 2.8, 3.0, 2.3, 2.3, 2.2, 2.8, 2.1and 2.4. If the
error bound is 0.3556, then the level of confidence interval of the mean is:
O 0.99
0.98
O None of the other options
O 0.95
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