Claim: The mean pulse rate (in beats per minute) of adult males is equal to 68.9 bpm. For a random sample of 137 adult males, the mean pulse rate is 70.3 bpm and the standard deviation is 11.3 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 Hy: bpm (Type integers or decimals. Do not round.)