Question

for the following study, identify the population, sample population, parameter, and sample statistic.
astronomers typically determine the distance to a galaxy (a huge collection of billions of stars) by measuring the distances to just a few stars within it and taking the mean (average) of these distance measurements.

identify the population. choose the correct answer below

c. the stars that were selected for measurement
d. all stars in the galaxy

identify the sample. choose the correct answer below

a. all stars
b. all stars in the galaxy
c. the stars that were selected for measurement
d. all galaxies

what is the population parameter?

a. the distances between each star in the galaxy and earth
b. the distances found in the study
c. the mean distance between all stars in the galaxy and earth
d. the mean distance between all stars that were selected for measurements and earth

Explanation:

For identifying the sample: A sample is a subset of the population selected for study. Here, the population is all stars in the galaxy, so the sample is the stars selected for measurement (option C). For the population parameter: A parameter describes the population. The mean distance of all stars (population) in the galaxy to Earth is the parameter (option C), as it summarizes the population's distance characteristic.

Answer:

Identifying the sample: C. The stars that were selected for measurement
What is the population parameter: C. The mean distance between all stars in the galaxy and Earth