The standard deviation of the mass of 50 mice in a normal population is 5 g. How many mice are within three standard deviations above the mean?

Question

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Answer 1

99.7% of the data lies within 3 standard deviations of the mean.

Any stat outside of that is considered an OUTLIER.

 

99.7% of 50 = 49.85

 

So either 49 of the mice or all 50 of them lie within

3 standard deviations of the mean.

That is, one outlier at most.