Aresearcher records the number of distracters (such as noises) that preschool-aged children ignore while watching a popular sunday morning cartoon show. assuming that the population variance is unknown, what type of t test is appropriate for this study?

Suppose that sociologists and cultural anthropologists are tying to measure the amount of child abuse for cross cultural comparison. they run into disagreement over whether spanking a child is abuse or discipline. what problem are they encountering in their research? a. reliability of the definition of abuse. b. validity of the definition of abuse. c. occam's razor about the definition of abuse. d. none of these.