Claim: The standard deviation of pulse rates of adult males is less than 12 bpm. For a random sample of 126 adult males, the pulse rates have a standard deviation of 11.2 bpm. Complete parts (a) and (b) below. a. Express the original claim in symbolic form. Y bpm (Type an integer or a decimal. Do not round.) b. Identify the null and alternative hypotheses. Ho bpm H₁: Y Y bpm (Type integers or decimals. Do not round.) ▼

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