Question

Determine the margin of error for a confidence interval to estimate the population mean with n=30and σ=39

for the following confidence levels.

a)	92 %
b)	94 %
c)	99 %

a) With a 92% confidence level, the margin of error is ____.

Answer 1

With a 92% confidence level, the margin of error is 12.47

With a 94% confidence level, the margin of error is 13.39

With a 99% confidence level, the margin of error is 18.34

if z critical values rounded to two decimals we

With a 92% confidence level, the margin of error is 12.46

With a 94% confidence level, the margin of error is 13.39

With a 99% confidence level, the margin of error is 18.37

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