An independent random sample is selected from an approximately normal population with unknown standard deviation. Find the
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An independent random sample is selected from an approximately normal population with unknown standard deviation. Find the degrees of freedom and the critical t-value (t*) for the given sample size and confidence level.
(a) n = 6, CL = 90%
(b) n = 21, CL = 98%
(c) n = 29, CL = 95%
(d) n = 12, CL = 99%
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Related Book For 
OpenIntro Statistics
ISBN: 9781943450077
4th Edition
Authors: David Diez, Mine Çetinkaya-Rundel, Christopher Barr
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