Two-and-a-half percent of a distribution is found beyond which two z-scores?

The parents of a child who has just been put on Ritalin are given a pamphlet describing some of the benefits and side effects of the drug. What types of side effects might the parents expect to see?

a. itching and rashes b. nausea and vomiting c. depression and anxiety d. decreased appetite and sleeping difficulties

Initially, when John Watson and his colleague, Rosalie Rayner, showed Little Albert a live white rat. Albert ________

a. began to whimper and tremble. b. liked the rat and seemed delighted. c. tried to crawl away and escape. d. didn't react to the rat, one way or another.