Aresearcher uses an anonymous survey to investigate the study habits of american college students. based on the set of 56 surveys that were completed and returned, the researcher finds that these students spend an average of 4.1 hours each week working on course material outside of class. for this study, the set of 56 students who returned surveys is an example of a(n)
a. parameter
b. statistic
c. population
d. sample

C Population

Step-by-step explanation:

Population

The above case is an example of population survey. Here a set of 56 surveys have been performed with set of 56 students. The survey is conducted on a large scale. In statistics a population is set of similar items or events which is of the interest for some event or experiment. Since, the above experiment fits the definition of the Population, it is example of population survey.

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

c

step-by-step explanation: