Final answer:
The correct hypothesis to test in order to compare the mean self-efficacy of clients who receive therapy A and therapy B is H0: μ_A = μ_B vs. HA: μ_A ≠ μ_B.
Step-by-step explanation:
The correct hypothesis to test in order to compare the mean self-efficacy of clients who receive therapy A and therapy B is:
(A) H0: μ_A = μ_B vs. HA: μ_A ≠ μ_B
This hypothesis tests whether the means of the two therapies are equal or not equal.