Dr. Alia is interested in learning whether students at Harvard University will support hybrid learning model for studying their courses. There are 10,000 undergraduate and 3,000 graduate students at Harvard University. If Dr. Alia wants to ensure that she has an equal number of undergraduate and graduate students in her sample, what type of sampling method should she use?

stratified random sampling method

Explanation:

Stratified sampling method is a sampling method whereby the population is divided into various groups or strata and each is seen as a subpopulation which is sampled independently. In other words each stratum or subpopulation is homogeneous or mutually exclusive and aids the researcher in easily sampling and reducing errors by touching on all facets of the population. This is seen in the above example where the researcher must divide his population into different sampling groups to aid equality such as in meeting up with all graduates and undergraduates opinions in his study

c 3 branches because idk why they had 3 well when:

you think of it there are still contrys with 3

it was certainly a debatable decision, mainly because it was based primarily on political - and not on legal or social - views. since the congress at that time was led by members of the republican party, and the territory that the tribes wanted to turn into an exclusively indian state was predominantly democratic, the proposal (as expressed in the constitution) did not succeed, but the constitution itself proved to be of crucial importance in the creation of the state of oklahoma, and, most importantly, it guaranteed the involvement of representatives of the indian tribes in the government of the future joint state.  

as a member of congress, i would have voted to ratify the constitution, or at least to have it tabled. ignoring it was an interested and partial decision.