This homework is confusing and and a lot of nonsense, please help me, brainliest will be given (this is mean to be Ethics but they don't have that choose)

1) what is the most likely number of aliens' civilizations in the Milky Way that could communicate with us?

2) how far away could the nearest aliens be?

3) Answer the following:
“We have seen no evidence of alien life, so there are no other civilizations in the universe other than ours.’’ Do you agree?

Explain the difference between an independent and dependent sample. choose the correct answer below. a. in an independent sample, the individuals are chosen without replacement; in a dependent sample, the individuals are chosen with replacement. b. in a dependent sample, one would use a two-tailed hypothesis test; in an independent sample, one would use a one-tail hypothesis test. c. a sample is independent when an individual selected for one sample does not dictate which individual is to be in the second sample. a sample is dependent when an individual selected for one sample dictates which individual is to be in the second sample. d. a sample is independent when an individual selected for one sample dictates which individual is to be in the second sample. a sample is dependent when an individual selected for one sample does not dictate which individual is to be in the second sample. independent samples are often referred to as matched-pairs samples.

Why would someone who is studying the history or culture of this time. find this text interesting important or useful?

How does the chairman of the federal reserve board get his job?