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Given that a portfolio’s return has a mean of 12% and a standard deviation of 14%, find the end points of its 95% confidence interval, assuming a normal distribution.","The answers may be:,a) -2% and 26%,b) -15.2% and 38%,c) -16% and 40%,d) -1.9% and 24.7%,e) 12% and 14%,I need to suport the answer with a rational,Thank you

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