The City Council in a Suburb of Raleigh Is Interested

Multiple Choice

The city council in a suburb of Raleigh is interested in the level of public support for a tax increase to support restoration of nearby parks and waterways. A marketing research firm is hired that then selects a simple random sample of 50 adult residents and contacts each to determine whether the resident would be opposed to the tax increase. Of these respondents, 15 indicate that they would be opposed to the tax increase.
What is the chance that all 50 residents in a particular neighborhood end up being the sample of residents selected?

A) The population of the suburb divided by 50
B) The same as for any other set of 50 residents
C) Smaller than average due to the "cluster" effect
D) Smaller than average due to stratification