Jennifer studies the number of crimes committed in a district for seven years before and after the passage of a new law that increased police presence on the streets. Jennifer's research design would be classified as a(n): A. Posttest-only design
B. repeated measures design
C. control series design
D. interrupted time series

Africa, 1914 which statement is the best conclusion for the information presented in the map? a) european colonization had a positive impact on african nations. b) african colonization the economic growth of all european nations involved. c) by the outbreak of world war i, most of the african continent was under english control. d) by the outbreak of world war i, most of the african continent was under european control.