Consider a population having a standard deviation equal to 10. We wish to estimate the mean of
Question:
Consider a population having a standard deviation equal to 10. We wish to estimate the mean of this population.
a. How large a random sample is needed to construct a 95 percent confidence interval for the mean of this population with a margin of error equal to 1?
b. Suppose that we now take a random sample of the size we have determined in part a. If we obtain a sample mean equal to 295, calculate the 95 percent confidence interval for the population mean. What is the interval’s margin of error?
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a for 1001 95 find n so E 1 n z 2 E 2 196 101 ...View the full answer
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Related Book For 
Essentials Of Business Statistics
ISBN: 9780078020537
5th Edition
Authors: Bruce Bowerman, Richard Connell, Emily Murphree, Burdeane Or
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