SOLUTION: in a sample of 10,000 observations, about how many observations would you expect beyond 3 standard deviations of mean?

Question 562981: in a sample of 10,000 observations, about how many observations would you expect beyond 3 standard deviations of mean?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
in a sample of 10,000 observations, about how many observations would you expect beyond 3 standard deviations of mean?
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Find the probability in the two tails.
That probability = 2*normalcdf(3,100) = 0.0027
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# of observations in those tails = 0.0027*10,000 = 27
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Cheers,
Stan H.
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