We hypothesize that Simone has lower systolic blood pressure (SBP) than the average college student. Is this a directional or non-directional hypothesis? If applicable, which tail is this hypothesis? Based on your answers to 1 and 2, what is the critical value (-1.96, -1.645, 1.645, or 1.96) for a significant difference between Simone and other college students?
A) Directional; Left tail; -1.645
B) Non-directional; Both tails; ±1.96
C) Non-directional; Right tail; 1.645
D) Directional; Right tail; 1.645