Descriptions of three studies are given. In each of the studies, the two populations of interest are students majoring in science at a particular university and students majoring in liberal arts at this university. For each of these studies, indicate whether the samples are independently selected or paired. Study 1: To determine if there is evidence that the mean number of hours spent studying per week differs for the two populations, a random sample of 100 science majors and a random sample of 75 liberal arts majors are selected. independently selected paired Study 2: To determine if the mean amount of money spent on textbooks differs per semester, a random sample of science majors is selected. Each student in this sample is asked for two data values: how much money they spent on textbooks in the spring semester and how much money they spent on textbooks in the fall semester. independently selected paired Study 3: To determine if the mean amount of time spent using the campus library differs for the two populations, a random sample of science majors is selected. A separate random sample of the same size is selected from the population of liberal arts majors. independently selected paired

Independently selected samples measures scores on the same variable but for two different groups of cases while Paired-samples measures scores on two different variables but for the same group of cases.

In case study 1, the sample is independently selected; a random sample of 100 science majors and a random sample of 75 liberal arts majors are selected: two different group of cases and just one variable, to compare the mean number of hours.

In case study 2, the samples are paired, a random sample of science majors is selected. Each student in this sample is asked for two data values: a group of case but two different variables; how much money they spent on textbooks in the spring semester and how much money they spent on textbooks in the fall semester were measured.

In case study 3, the samples were independently selected. Two different group of cases; a random sample of science majors is selected. A separate random sample of the same size is selected from the population of liberal arts majors were measured for just one variable the mean amount of time spend in campus.

codiepienagoya codiepienagoya · Answer 2 · 2021-11-19T08:55:37+01:00

Independently sample data measure the very same factor but for two separate groups of instances, whereas paired-samples test the same factor but for the same selection of studies.

For point 1:

The sampling is chosen at random a randomized total number of 100 science degrees.
The random sample of 75 art students is chosen from the 2 distinct groups of examples.
It only with one variable for comparing the mean amount of hours.

For point 2:

After matching the samples, a random sample of science majors is chosen.
In each student in this sample was asked for 2 data values: a set of the case but two separate variables.
how much amount they spend on books in the spring semester as well as how much amount they spend on texts in the fall semester.

For point 3:

The sample was randomly chosen in each of the three categories of cases, a random sample of science majors is chosen.
A second random selection of the same size was drawn from the community of liberal arts majors.
In this, only one variable, the mean length of time spent on campuses, was evaluated.

Therefore, the final answer is "Independently selected, paired, and Independently selected ".

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