The following experiment most closely fits which experimental design? Despite a severe shortage of kidneys available for transplants, doctors have been reluctant to use kidneys from cadaver donors over age 60 . The rate of success of these transplanted kidneys was 73 percent. Recently, Italian scientists devised a standard test—based on kidney biopsy at the time of removal from the cadaver
Using a scoring system devised by expert pathologists, kidneys are graded on a score of 0 (normal) to 12 (severe damage). In a study, kidneys that scored 3 or less were transplanted singly; those that scored 4 to 6 were used in dual transplants; and those that scored 7 or higher were discarded. After three years, 93 percent of the older kidneys that scored favorably (6 or lower) functioned well.
a. prospective design
b. retrospective design
c. randomized experimental study
a
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Which Egyptian dynasty do scholars believe was the probable setting for the Exodus story?
A. Seventeenth Dynasty B. Eighteenth Dynasty C. Nineteenth Dynasty D. Twentieth Dynasty
Traditionally, Thales is thought to have been the first Western philosopher.
a. true b. false
The Chinese refer to Confucius as Kong
Indicate whether the statement is true or false.
The "?" sign is used to symbolize
A. "Either . . . or . . . but not both." B. "If . . . then . . ." C. "Both . . . and . . ." D. "Either . . . or . . . or both."