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Assume the resting heart rates for a sample of individuals are normally distributed with a mean...

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Basic Math

Assume the resting heart rates for a sample of individuals arenormally distributed with a mean of 85 and a standard deviation of20. Use the? 68-95-99.7 rule to find the following quantities.

a. The relative frequency of rates less than 125 using the?68-95-99.7 rule is ____________.

b. The relative frequency of rates greater than 105 using the?68-95-99.7 rule is ___________.

c. The relative frequency of rates between 45 and 85 using the?68-95-99.7 rule is _____________.

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