Question

a. A statistics practitioner drew a random sample of 400 observations and found that x̄ = 700 and s = 100. Estimate the population mean with 90% confidence.
b. Repeat part (a) with a 95% confidence level.
c. Repeat part (a) with a 99% confidence level.
d. What is the effect on the confidence interval estimate of increasing the confidence level?



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  • CreatedFebruary 03, 2015
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