Question

all individuals being studied under a survey is called *
a. population
b. sample
c. statistic
d. parameter

a city mayor is interested in determining what percentage of the city residents who are satisfied with the citys public transportation system. the mayor randomly selects 1000 city residents to respond to a survey. which of these is the parameter?
1000 city residents
all city residents
percentage of all city residents who are satisfied with the citys transportation system
percentage of all 1000 residents who are satisfied with the citys transportation system

Explanation:

In statistics, the population is the entire group of individuals being studied. A parameter is a numerical characteristic of a population. In the first question, all individuals in the survey are the population. In the second question, the mayor wants to know about all city - residents (the population), and the percentage of all city residents satisfied with the transportation system is a parameter of that population.

Answer:

a. Population
c. Percentage of all city residents who are satisfied with the city's transportation system