A researcher has compiled a file of information on a random sample of 317 families in a city that has chronic, long-term patterns of child abuse. Below are reported some of the characteristics of the sample along with values for the city as a whole. For each trait, test the null hypothesis of “no difference” and summarize your findings.
a. Mothers’ educational level (proportion completing high school):
b. Family size (proportion of families with four or more children):
c. Mothers’ work status (proportion of mothers with jobs outside the home):
d. Relations with relatives (proportion of families that have contact with relatives at least once a week):
e. Fathers’ educational achievement (average years of formal schooling):
f. Fathers’ occupational stability (average years in present job):
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