B) Identify the sampling technique used for the following samples. (1 mark each) i) Questioning students as they leave the university library, a researcher asks 200 students
about their study habits.
ii) If a researcher selected five schools at random and then interviewed each of the teachers
in those five schools.

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is