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Announcements for 84 upcoming engineering conferences were randomly picked from a stack of IEEE Spectrum magazines....

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Basic Math

Announcements for 84 upcoming engineering conferences wererandomly picked from a stack of IEEE Spectrum magazines. The meanlength of the conferences was 3.94 days, with a standard deviationof 1.28 days. Assume the underlying population is normal. What isthe error bound of 95% confidence interval for the population meanlength of engineering conferences? Construct a 95% confidenceinterval for the population mean length of engineering conferences.What is the lower bound? Construct a 95% confidence interval forthe population mean length of engineering conferences. What is theupper bound?

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Solution Given thatPoint estimate sample mean 394sample standard deviation    See Answer
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