Construct a 98 confidence interval for the mean percentage


Eighty-five superannuation funds operating in Australia are randomly selected and their percentage returns in 2015 are considered. The mean is 17.92%, st. deviation is 4.02%

1) Construct a 98% confidence interval for the mean percentage return of all superannuation funds operated in Australia.

(ii) State the assumption(s) and/or theorem(s) that you use in (i).

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Finance Basics: Construct a 98 confidence interval for the mean percentage
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