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The Standard Deviation of pulse rates of adult males is less then 11bpm. For a random sample of 131 adult males, the pulse rates have

The Standard Deviation of pulse rates of adult males is less then 11bpm. For a random sample of 131 adult males, the pulse rates have a standard deviation od 10.5 bpm.

Express the original claim in symbolic form

Identify the null and alternative hypotheses.

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