Estimate the population mean
Construct an 80% confidence interval to estimate the population mean when x = 125 and s = 32 for the following sample sizes:
a) n = 30
b) n = 60
c) n = 90
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Construct a 90% confidence interval to estimate the average selling price in the population with this sample. What is the margin of error for this interval?
Verify your results with Excel. 8.18 Construct a 95% confidence interval to estimate the population mean using the following data:
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