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A sample of 11 observations taken from a normally distributed population produced the following data. -7.1 10.3 8.7 -3.6 -6.0 -7.5 5.2 3.7 9.8 -4.4

A sample of 11 observations taken from a normally distributed

population produced the following data.

-7.1 10.3 8.7 -3.6 -6.0 -7.5 5.2 3.7 9.8 -4.4 6.4

b) Make a 95% confidence interval for .

c) What is the margin of error of estimate for in part b?

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