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Given that the weights of packages of an expensive compound shows a normal distribution with a mean of 25 oz. and standard deviation of 1.89
Given that the weights of packages of an expensive compound shows a normal distribution with a mean of 25 oz. and standard deviation of 1.89 oz. Find the probability (proportion rounded to 4 digits after the decimal sign) that the total weight of 9 packages will be less 220 oz.
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