Assuming you have samples from normal populations with known variance, find (a) The degree of confidence used
Question:
Assuming you have samples from normal populations with known variance, find
(a) The degree of confidence used if n = 19, σ = 8, and the total width of a confidence interval for the mean is 3.29 units
(b) The sample size when α2 = 100 and the 95 % confidence interval for the mean is from 17.2 to 22.8
(c) The known variance when n = 100 and the 98 % confidence interval for the mean is 28.26 units in width
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a The degree of confidence used can be determined by using the formula for the margin of error in a ...View the full answer
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Related Book For 
Statistics For Business And Financial Economics
ISBN: 9781461458975
3rd Edition
Authors: Cheng Few Lee , John C Lee , Alice C Lee
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