8 Which of the following rescarch situations would be most likely to use an independent measures design? d tor Select one: O a compare the blood pressure readings before medication and after medication for a group of patients with high blood press O b. examine the long-term effectiveness of a stop-smoking treatment by interviewing individuals 2 months and 6 months afte treatment ends Occompare the mathematics skills for 9th grade boys relative to thgrade girls O d. cxamine the development of vocabulary as a group of children mature from age 2 to age 3 If other factors are held constant, which set of sample characteristics is most likely to produce a statistically significant statistic sample /-test? Select one: O a 100 with s = 10 b. 725 with s = 20 O c. -100 with s-20 Od 25 with = 10 Which is a serious concem with a within-subjects rescarch design? Select one: O a. The results will be influenced by order effects b. The results will be influenced by counterbalancing Oc. The results will be influenced by confounds introduced by researchers. d. The results will be influenced individual differences rather than treatment differences