Question

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 selected 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, 15 indicated that they would be opposed. The sample is

a.the 50 residents selected

b.the 15 residents not in favor of the increase

c.the 35 residents in favor of the increase.

d.all residents in the suburb

Answer 1

right choice is a.the 50 residents selected

In statistics a data sample is a set of data collected and the world selected from a statistical population by a defined procedure and refers to a set of observations drawn from a population. The elements of a sample are known as sample points or sampling units or observations. Often, it is necessary to use samples for research, because it is impractical to study the whole population.

Here population:   resident of the city council in a suburb of Raleigh

sample: selected 50 adult residents by marketing research firm