A member of the City Council has proposed a resolution opposing construction of

Question

A member of the City Council has proposed a resolution opposing construction of a new state prison there. The council members decide they want to assess public opinion before they vote on this resolution. Below are some of the methods that are proposed to sample local residents to determine the level of public support for the resolution. Match each with one of the listed sampling techniques. 1 cluster 2 convenience 3 multistage 4 simple (SRS) 5 stratified 6 systematic 7 voluntary response ____ Place an announcement in the newspaper asking people to call their council representatives to register their opinions. Council members will tally the calls they receive. ____ Have each council member survey 50 friends, neighbors, or co-workers. ____ Have the Board of Elections assign each voter a number, then select 400 of them using a random number table. ____ Randomly pick 50 voters from each election district. If you flip a fair coin and get heads 5 times in a row, what is the chance of getting tails on the next flip? A. Greater than 50% B. 50% C. Less than 50% The jukebox from hell contains only three songs: Friday, (Simply Having) A Wonderful Christmastime, and Call Me Maybe. If the probability that Friday is playing is 1/6 and the probability that (Simply Having) A Wonderful Christmastime is playing is 1/3, what is the probability that Call Me Maybe is playing? a. 1/6 b. 1/3 c. 1/2 d. If you pick d, you will be wrong.

Explanation / Answer

(29) Voluntary response sampling

          A voluntary response sampling is a sampling in which people volunteer to participate in a survey.

(30) Convenience sampling

        Convenience sampling is a type of non-probability sampling that involves the sample being drawn from that part of the population that is close to hand.

(31) Simple (SRS) sampling

        A simple random sample is a subset of a statistical population in which each member of the subset has an equal probability of being chosen.

(32) Stratified sampling

        Stratified sampling is a probability sampling technique wherein the researcher divides the entire population into different subgroups or strata, then randomly selects the final subjects proportionally from the different strata.

(33) Option B: 50%

Coin flips are independent. The universe does not remember that it had just flipped 5 heads with a particular coin and use that to bias against another heads outcome. So the chance of flipping the heads on the next flip is the same as it was to flip the first roll.

(34) Option C: 1/2

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