Fill in the blank with the appropriate problem number (18, 19, or 20) and then g

Question

Fill in the blank with the appropriate problem number (18, 19, or 20) and then give the solution (you may use scientific notation, rounded to the nearest tenth, if necessary). Problem 21 can be solved with the setup given in problem _____ and the solution to problem 21 is: Problem 22 can be solved with the setup given in problem _____ and the solution to problem 22 is: Problem 23 can be solved with the setup given in problem _____ and the solution to problem 23 is: Circle the most appropriate description. A city planning committee surveys 100 people waiting at a bus stop about the expansion of the public transportation system. random sample systematic sample self-selected sample convenience sample bipartisan sample stratified random sample Volunteers stop to survey residents at every fourth house from the end of each block in town random sample systematic sample self-selected sample convenience sample bipartisan sample stratified random sample Do you agree that the cafeteria should serve ice cream in various tasty flavors? potentially biased question not potentially biased question

Explanation / Answer

27.

Of the options given here, the best choice is to call this a convenience sample. A convenience sample is a sample in which respondents are chosen because it is convenient to interview them. They are chosen, for example, because the respondents are in a place that is easy for the interviewer to work in. In this case, the respondents are chosen because they are at a bus stop

28.

The best answer for this is that this sample is a systematic sample.This is a random sample because of everyone in the city, in theory, has a chance to be a part of it. It is not confined to one neighborhood or, as in your previous question, one bus stop. In a systematic sample, what you do is to take every nth unit in your population. That is what you are doing in this sampling technique. You have decided to go to every block and take the 4th house. Therefore, this is a systematic random sample

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