I.1 Know these terms. A friend who knows no statistics has encountered some statistical terms in reading for her psychology course. Explain each of the following terms in one or two simple sentences.
(a) Simple random sample. (Hint: See pages 24–26.)
(b) 95% confidence. (Hint: See pages 47–49.)
(c) Statistically significant. (Hint: See page 103.)
(d) Informed consent. (Hint: See pages 144–145.)