Mathematics, 27.07.2019 04:30, AutumnGarringer

According to a recent report, people smile an average of µ = 62 times per day. assuming that the distribution of smiles is approximately normal with a standard deviation of σ = 18, find each of the following values: a. what proportion of people smile more than 80 times a day

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According to a recent report, people smile an average of µ = 62 times per day. assuming that the dis...