If a sample is selected from a population, the sample mean is essentially guaranteed to be different from the population mean. In general, the naturally occurring difference between a sample statistic and the corresponding population parameter is called ____

Almost every day you see a middle-aged man walking the streets with two large garbage bags slung over his shoulder. He seems to be homeless, and he spends a great deal of time apparently talking to and answering people you can't see. His muttering seems incoherent and he will often suddenly laugh or giggle for no obvious reason. IF he is displaying schizophrenia (and he may not be) what type is it?

a. paranoid b. disorganized c. Type II d. catatonic e. residual

What is a good means of assessing how much a person remembers from something they read earlier?

a. response time b. accuracy c. verbal reports d. content analysis