The human aging process has been consistent across history and will continue to be into the future.

Gretchen is sitting at her doll house. She isvery happy playing by herself. Which of the

following types of play best characterizes her activity? a. Onlooker b. Parallel c. Solitary d. Cooperative

Which of the following is not an assumption of the Wilcoxon matched-pairs signed-ranks T test? a. The data are ratio, interval or ordinal in scale, all of which must be converted to ranked (ordinal) data before conducting the test. b. The underlying distribution is not normal

c. The observations are independent. d. The other alternatives are all assumptions of the Wilcoxon matched-pairs signed-ranks test.