Question

to gather information about starting salaries at companies listed in a stock index, a researcher contacts 78 of the 600 companies. identify the population and the sample. describe the sample data set.
what is the population in the given problem?
a. all companies listed in any stock index
b. all companies
c. the 600 companies in the index
d. the 78 companies contacted
identify the sample for the given problem. choose the correct answer below.
a. all companies
b. the 78 companies contacted
c. the 600 companies in the index
d. all companies listed in any stock index
describe the sample data set. choose the correct answer below.
a. the starting salaries for the 600 companies in the index
b. the 78 companies contacted
c. the 600 companies in the index
d. the starting salaries for 78 companies

Explanation:

The population is the entire group of interest. Here, the researcher is interested in companies listed in a specific stock - index, which are the 600 companies in the index. The sample is a subset of the population that is actually studied, which are the 78 companies contacted. The sample data set is the data collected from the sample, which in this case is the starting salaries of the 78 contacted companies.

Answer:

What is the population in the given problem?
C. The 600 companies in the index
Identify the sample for the given problem.
B. The 78 companies contacted
Describe the sample data set.
D. The starting salaries for 78 companies