A graduate student wants to examine the effect of print media versus televised media on individuals' position on several social issues. The superintendent of a local work release facility, a family friend, will allow the graduate student access to the prison population to help her quickly accrue subjects. The student's IRB should:
a. Approve this project since the risk appears to be no more than minimal.
b. Approve this project because the superintendent is the ultimate authority on what happens in his facility.
c. Not approve this project because the prisoners are merely a population of convenience for the student.
d. Approve this project but submit it for federal review.

C. Not approve this project because the prisoners are merely a population of convenience for the student

Explanation:

The student didn't select her population using any defined sampling method hence the generalization of her claim will be somewhat invalid because she just chose a prepared population set which is not representing enough.

a. formula: f=ma or f/m=a

10,000n/1,267kg≈7.9m/

b. formula: a= and s=d/t

speed= 394.6/15

s=26.3m/s

a=

a=1.75m/

c. 7.9-1.75=difference of 6.15m/

d. the force that most likely caused this difference is friction forces

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.