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A study of yearling salmon in a certain river finds that they have a mean length of 149.8 mm and a standard deviation of 11.7

A study of yearling salmon in a certain river finds that they have a mean length of 149.8 mm and a standard deviation of 11.7 mm.

According to the 68 - 95 - 99.7 rule, 99.7% of the salmon...

...are between 114.7 and 184.9 mm.

...are between 126.4 and 173.2 mm.

...are between 138.1 and 161.5 mm.

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