Complete the following exercises located at the end of each
chapter and put them into a word document. Show all revelant work.
21.4 Another investigator criticizes the design of the
previous study, saying
that high school students should have been randomly assigned
to either
the special training condition or a control condition and
tested just once
at the end of the study. Subsequently, she conducts this
study.
21.7 An investigator wishes to test whether creative artists
are equally likely to
be born under each of the 12 astrological signs.
21.8 To determine whether there is a relationship between
the sexual codes of
primitive tribes and their behavior toward neighboring
tribes, an anthropologist
consults available records, classifying each tribe on the
basis of
its sexual codes (permissive or repressive) and its behavior
toward
neighboring tribes (friendly or hostile).
21.12 Over a century ago, the British surgeon Joseph Lister
investigated the
relationship between the operating room environment
(presence or
absence of disinfectant) and the fate of about 100 emergency
amputees
(survived or failed to survive).
21.21 A social scientist wishes to determine whether there
is a relationship between the attractiveness scores (on a 100-point scale)
assigned to college students by a panel of peers and their scores on a
paper-and-pencil test of anxiety.
