For which of the following situations would a census be more useful than a sample survey?
a. To determine what percent of the adults in a state are unemployed.
b. To estimate how many of the 200 physicians in a large city accept patients on welfare.
c. To estimate how many homeless people there are in a city.
d. To estimate how many of the students at a large university are in favor of a proposed fee increase to fund more parking.
Question 2
A national polling organization wishes to estimate the percentage of all teenagers who believe social security will 'be there' for them. The organization surveys a random sample of 1500 teenagers and 37 of this sample says that they believe social security will 'be there' for them. In this survey, what is the population of interest?
a. The 1500 teenagers who were surveyed.
b. Teenagers who believe social security will 'be there' for them.
c. All teenagers.
d. The people in the sample who believe social security will 'be there' for them.
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