Claim The mean systolic blood pressure of all healthy adults is less than 123 mm Hg Sample data For 254 healthy adults the mean systolic blood pressure level is 122 74 mm Hg and the standard deviation is 16 18 mm Hg Complete parts a and b a Express the original claim in symbolic form Let the parameter represent a value with respect to systolic blood pressure of a healthy adult H 123 Type an integer or a decimal Do not round b Identify the null and alternative hypotheses Ho H Type integers or decimals Do not round