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The mean time to assemble a piece of furniture is 52 minutes. Suppose the the assembly times are normally distributed with a standard deviation

The mean time to assemble a piece of furniture is 52 minutes. Suppose the the assembly times are normally distributed with a standard deviation of 4.3 minutes. Based on the empirical rule, 2.5% of the assembly times are below what value? 60.6 minutes 43.4 minutes 47.4 minutes 39.1 minutes

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