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The daily takings, $, for a shop were noted on 30 randomly chosen days. The takings are summarized by = 31500, ! = 33141816 Calculate

The daily takings, $, for a shop were noted on 30 randomly chosen days. The takings are summarized by = 31500, ! = 33141816 Calculate unbiased estimates of the population mean and variance of the shop's daily takings. Calculate a 98% confidence interval for the mean daily takings.

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