4. This court decision ensures equal protection under the law by guaranteeing (3.1) a. Equal educational access for all
b. Free access to amusement parks
C. Open borders with neighboring countries
d. Private schools that have to follow the same laws as public schools

Using mr smith and his id, identify two potential internal validity threats that might affect the a—b design. tell me how that threat might impact conclusions in the a—b design. note #1: you cannot use maturation (since i already did that one for note #2: there are some mr smith id threats that won’t have much impact in a single case design.