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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 random sample of 12 graduates of a certain secretarial school typed an average of 82.2 words per minute with a standard deviation of 7.1 words per minute. Assuming a normal distribution for the number of words typed per minute, find a 99% confidence interval for the average number of words typed by all graduates of this school. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. Click here to view page 1 of the table of critical values of the t-distribution. The confidence interval is <u< (Round to two decimal places as needed.) Enter your answer in the edit fields and then click Check Answer All parts showing Clear All Check Answer V 1:17 US DI 96 &
Transcribed Image Text:A random sample of 12 graduates of a certain secretarial school typed an average of 82.2 words per minute with a standard deviation of 7.1 words per minute. Assuming a normal distribution for the number of words typed per minute, find a 99% confidence interval for the average number of words typed by all graduates of this school. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. Click here to view page 1 of the table of critical values of the t-distribution. The confidence interval is <u< (Round to two decimal places as needed.) Enter your answer in the edit fields and then click Check Answer All parts showing Clear All Check Answer V 1:17 US DI 96 &
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