Hello. This question is incomplete. The full question is:
"A psychology professor wants to know whether verbal ability is related to memory quality in current first-year students at her small college. Participants in the study (first-year students at her college) complete an online memory task. The students are first shown a list of 60 words. Next they are shown a list that includes five new words that are conceptually similar to words on the original list. Then they are asked to identify the words on the second list that appeared on the original list. She uses the percentage of new but conceptually similar words that were mistakenly thought to be on the original list as her measure of memory quality. She also asks the students to report several characteristics such as their age, gender, and verbal SAT score.
Which of the following are variables in the study? Check all that apply. The students' verbal SAT scores The students' percentage of words that were correctly recognized on the original list The number of students participating in the survey."
Answer:
The student's verbal SAT scores
The student's percentage of words that were correctly recongnized on the original list.
The number of students participating in the survey.
Explanation:
Within all scientific research, variables (dependent and independent) can be verified. These variables correspond to the number of factors that can take on value within the experiment and dissolve results for the research to be completed.
Accordingly, we can see that the variables of the experiment shown above are:
- The student's verbal score in the SAT: presents a value and shows the difference between the students allowing a comparison to be made.
- The percentage of words of the student that were correctly refilled in the original list: Also assumes a value and shows a result that is directly related to the veracity of the hypothesis of the study:
- The number of students who participated in the study: It also assumes a value and will allow calculations and graphs to be made to show the results.
Answer:
3. This will lead to a biased sample because the type of students who take Psychology and Law may be different from the type of students who take Introduction to Neuroscience
Explanation:
Professor Kramer wants to measure the level of happiness of his students, and he wants to do so for both his classes. However, he will biased the survey simply because he is considering surveying only the students from one of his classes, who may be very different from the students from the other class.
If Professor Kramer wants to make a unbiased survey, he should either find a way to also apply the survey to the students from the other class, or change the goal of the research to measuring the happiness level of the Psychology and Law class students only.
Answer:
The answer is D
Explanation:
Katelyn is not putting any effort to do the job by not contributing, but still gets rewarder for the high grade. A free rider is someone who takes credit for a job the person did not do. Katelyn is taking this type of credit, so she is a free- rider.
"Both chemical weapons and machine guns helped to create a stalemate on the Western Front" is the statement best compares the use of chemical weapons and machine guns in World War I
Answer: Option B
<u>Explanation:</u>
In April 1915, Germany was the first use of a chemical weapon like chlorine gas, diphosgene, mustard gas at Ypres, Belgium against French. Later in 1917, French also started to use chemical weapons.
In 1925, due to overuse of chemicals weapons, The Geneva Protocol treaty prohibited the use of biological or chemical weapons in international armed conflicts.
Machine Gun also dominant during the first world war.They wiped down many enemy troops. machine guns was not a lethal weapon during Great War.
