Claim: The standard deviation of pulse rates of adult males is less than 10 bom. For a random sample of 127 adult males, the pulse rates have a standard deviation of 9.7 bpm. Complete parts (a) and (b) below. a. Express the original claim in symbolic form. bpm (Type an integer or a decimal. Do not round.) b. Identify the null and alternative hypotheses. Ho: bpm bpm (Type integers or decimals. Do not round.)