Question
A random sample of 14 items is drawn from a population whose standard deviation is unknown. The sample mean is x = 780 and the
A random sample of 14 items is drawn from a population whose standard deviation is unknown. The sample mean is x
= 780 and the sample standard deviation is s = 5
UseAppendix Dto find the values of Student'st.
(a)Construct an interval estimate ofwith 98% confidence.(Round your answers to 3 decimal places.)
The 98% confidence interval is from to
(b)Construct an interval estimate ofwith 98% confidence, assuming thats= 10.(Round your answers to 3 decimal places.)
The 98% confidence interval is from to
(c)Construct an interval estimate ofwith 98% confidence, assuming thats= 20.(Round your answers to 3 decimal places.)
The 98% confidence interval is from to
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Precalculus Enhanced With Graphing Utilities (Subscription)
Authors: Michael, Michael Sullivan III, Michael III Sullivan, III Sullivan
6th Edition
0321849108, 9780321849106
