The critical absolute value of Student's t decreases as the degrees of freedom increase.

The effects of most psychoactive drugs can be explained by their actions on

a) glands. b) muscles. c) the spinal cord. d) neurotransmitters.

The active molecule in marijuana is highly fat soluble. This means it:

a. Can readily pass through the blood-brain barrier b. Can pass through the blood-brain barrier slowly c. Can pass through the blood-brain barrier only after being metabolized into a less fat-soluble form d. Must be transformed into a less fat-soluble form before it is administered into the body, such as through smoking