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In a regional high school swim meet, women's times (in seconds) in the 200-yard freestyle ranged from 105.4 to 145.3. Estimate the standard deviation, using

In a regional high school swim meet, women's times (in seconds) in the 200-yard freestyle ranged from 105.4 to 145.3.

Estimate the standard deviation, using the Empirical Rule.(Round your answer to 2 decimal places.)

Standard deviation

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