Inference recap $(8.1to11.2)$In each of the following settings, say which inference procedure from Chapter $8,9,10,or11$you would use. Be specific. For example, you might say “two-sample z test for the difference between two proportions.” You do not need to carry out any procedures.

(a) What is the average voter turnout during an election? A random sample of $38$cities was asked to report the percent of registered voters who actually voted in the most recent election.

(b) Are blondes more likely to have a boyfriend than the rest of the single world? Independent random samples of $300$blondes and $300$ nonblondes were asked whether they have a boyfriend.

A random sample of $38$ cities was asked to report the percent of registered voters who actually voted in the most recent election.

During an election, perform the following test to determine the average voter turnout:

The average voter turnout during an election is of particular importance to the investigator.

The researcher took a random sample of $38$cities and calculated the percentage of registered voters who voted in the most recent election.

When the population standard deviation is known, the sample $Z$-test for the single mean is applied.

The population standard deviation is unknown because just one sample of $T$-test for a single mean is employed.

The Independent random samples of $300$ blondes and $300$ non blondes were asked whether they have a boyfriend.

To see if blondes are more likely than the rest of the single world to have a boyfriend, do the following: The researcher is particularly interested in seeing if blondes are more likely than the rest of the single world to have a boyfriend.

The researcher chose two separate random samples of $300$blondes and $300$nonblondes and asked them if they had a boyfriend or not.

Since the samples are large, then we take$z-test$.