Question: Question 5:

For each study in “question 11”, indicate whether a one- or a two-tailed test should be used and state the H₀ and H_a. Assume that μ = 50 when the amount of the independent variable is zero.

“Question 11” – Describe the experimental hypotheses and the independent and dependent variables when we study:

(a) Whether the amount of pizza consumed by college students during finals week increases relative to the rest of the semester.

(b) Whether breathing exercises alter blood pressure.

(c) Whether sensitivity to pain is affected by increased hormone levels.

(d) Whether frequency of day-dreaming decreases as a function of more light in the room.