Two teachers who are friends teach math at different high schools. at a conference, they learn about a new program for teaching trigonometry. they decide to test it by having one teacher use it in her class and the other use the traditional program, then compare their students' scores on the ap trigonometry test. this is an example of which experimental design?

The experimental design is called Between Subjects Design or Independet Measure.

Explanation:

In the experimental design "Independet Measures" you have different groups. Each group is tested under certain conditions whereas a member of one group cannot be part of another group. A commonly known case were this experimental design is used is drug testing. One group is given the medication whereas the other group receives the placebo.

i would think yes.

explanation:

because we have every natianlity in our country which makes us so diverse and unique. that's why in a lot of cities there are places like little italy, koreatown, chinatown.  

no the answer is c only objects touching the earth's surface can be acted upon by an outside force