Question
a random sample of 130 items is drawn from a population whose standard deviation is known to be o=60. The sample mean is x=70. a)
a random sample of 130 items is drawn from a population whose standard deviation is known to be o=60. The sample mean is x=70.
a) Construct an interval estimate for u with 95 percent confidence. (round to 1 decimal place)
The 95% confidence interval is from to
b) Construct an interval estimate for u with 95 percent confidence, assuming that o-120.
The 95% confidence interval is from to
c) Construct an interval estimate for u with 95 percent confidence that o=240.
The 95% confidence interval is from to
d) Describe how the confidence interval changes as o increases.
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Confidence Intervals for Population Mean u We can estimate the population mean u with a confidence i...
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Applied Statistics In Business And Economics
Authors: David Doane, Lori Seward
4th Edition
73521485, 978-0073521480
