Events A, B, and C are mutually exclusive and exhaustive. The probability of Event A is .2. The probability of Event B is .3. The probability of Event C is .5. The conditional probability of A given C, P(A|C), is .7.

According to research on the testing effect,

a. although testing can improve recall, it is not as helpful as spending the same amount of time studying. b. testing consistently improves recall, no matter whether the retention interval is short or long. c. this effect operates only when students receive feedback on their test scores. d. one explanation is that test-taking creates desirable difficulties.

One way to conceptualize the relationship among the elements of the nervous system is to use a hierarchical organization. Using this kind of scheme, the

a. sympathetic and parasympathetic are divisions of the somatic nervous system. b. peripheral nervous system can be divided into the somatic and autonomic nervous systems. c. autonomic nervous system is composed of the peripheral and central nervous systems. d. two divisions of the central nervous system are the somatic and autonomic nervous systems.