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Suppose that pulse rates among healthy adults are normally distributed with a mean of 80 beats/second and a standard deviation of 10 beats/second. What proportion

Suppose that pulse rates among healthy adults are normally distributed with a mean of 80 beats/second and a standard deviation of 10 beats/second. What proportion of healthy adults have pulse rates that are at most 76 beats/sec? Round your answer to at least four decimal places.

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