Dr. Guidry conducts a study examining the relationship between the number of friends one has and the experience of daily stress and life satisfaction. She randomly samples 1,500 elderly men and women in the Memphis, Tennessee, area in the southern United States. Below are her findings. < Life satisfaction and experience of daily stress: r = -.57 ( p = .01) < Number of friends one has and experience of daily stress: r = .09, not sig. < Number of friends one has and life satisfaction: r = .36 ( p = .04) Dr. Oswald submits her study for publication in a scientific journal. If one of the peer reviewers is concerned about the external validity of her study, which of the following is the most important aspect of Dr. Oswald’s study to consider?
a. Outliers
b. Moderators
c. Random
d. Curvilinear scores

Question options:

I believe the options to the question are:

a) The random sampling technique used to recruit the participants

b) The number of people in the sample

c) The use of three measured variables

d) The number of significant findings

a. The random sampling technique used to recruit the participants

Explanation:

The random sampling technique would be considered under the review of external validity of the study.

Why? The external validity as opposed to the internal validity of a study determines how much the results or conclusions of a study can be applied outside the context of that study. The random sampling technique would reveal how sampling was conducted and whether it reflects an objective/impartial study.

answer; the correct answer to the above statement is to increase the production of milk in a herd of milk cows, the highest producing cows were chosen as the mother;

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.