Overall, in developing countries approximately what percentage of children do not attend primary school?

If a hamster in its home territory attacks an intruder, what will the hamster do if a second intruder arrives shortly after the first intruder leaves? a. Withdraw from the second intruder

b. Play with the second intruder. c. Attack the second intruder quickly and vigorously. d. Attack the second intruder but less vigorously than the first.

Experimental designs in which there are two groups and a treatment is given to one group but the groups are not equivalent because the researcher did not have control over the assignment of the subjects to the groups are called _____ designs

a. factorial c. applied b. quasi-experimental d. real world