Question: a A random sample of 100 observations was randomly drawn

a. A random sample of 100 observations was randomly drawn from a population with a standard deviation of 5. The sample mean was calculated as x̄ = 400. Estimate the population mean with 99% confidence.
b. Repeat part (a) with x̄ = 200.
c. Repeat part (a) with x̄ = 100.
d. Describe what happens to the width of the confidence interval estimate when the sample means decreases.


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  • CreatedFebruary 03, 2015
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