Aresearch design in which the same participants are observed in each group of a research study is called:

a. within-subjects design.
b. between-subjects design.
c. mixed factorial design.
d. randomized design

Which questions should robert ask himself before investing the $10,000 he inherited? check all that apply. how am i protected as an investor? are my friends investing in a similar way? what guarantees are in place so i make money? what taxes will i have to pay on this investment? how do the risks compare to the potential gains? what are the chances that the investment will fail?