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Using the Empirical Rule, approximately how much probability is less than -1 AND greater than +1...

Using the Empirical Rule, approximately how much probability is less than -1 AND greater than +1 standard deviations from the mean of normal distribution with mean mu & standard deviation sigma?

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Answer #1

according to empirical rule, 68% of data falls within +/-1 std.deviation of the mean

Required probability = 1 - 0.68
= 0.32

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