Based on +/-3 standard deviations, what is the probability that a sample would fall within this range if only random variation was present?Multiple Choice99.7%77.8%66.7%95.5%
Question
Based on +/-3 standard deviations, what is the probability that a sample would fall within this range if only random variation was present?Multiple Choice99.7%77.8%66.7%95.5%
Solution
The correct answer is 99.7%. This is based on the empirical rule, or 68-95-99.7 rule, which states that for a normal distribution, 68% of the data will fall within one standard deviation, 95% within two standard deviations, and 99.7% within three standard deviations.
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