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Find the critical value t for the following situations. a) a 95% confidence b) a 90% confidence interval based on df = 21 interval based on df = 3

Find the critical value t for the following situations. a) a 95% confidence b) a 90% confidence interval based on df = 21 interval based on df = 3

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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Find the critical value t for the following situations. a) a 95% confidence interval based on df = 21 b) a 90% confidence interval based on df = 3
Transcribed Image Text:Find the critical value t for the following situations. a) a 95% confidence interval based on df = 21 b) a 90% confidence interval based on df = 3
Expert Solution
Step 1: using excel we find critical value

Confidence level 95%

α=1-0.95=0.05

degrees of freedom= n-1=21

critical value =tc= 2.080

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