Announcements for 8.1 upcoming engineering conferences were randomly picked from a stack of IEEE Spectrum magazines. The mean length of the conferences was 3.9.4 days, with a standard deviation of 1.28 days. Assume the underlying population Is normal.
a. In words, define the random variables X and X.
b. Which distribution should you use for this problem? Explain our choice.
c. Construct a 95% confidence 1nteral for the population mean length of engineering conferences.
I. State the confidence interval.
U. Sketch the graph.
lii. Calculate the error bound.
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Chapter 8 Solutions
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