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Researchers conducted a study to examine the effect of music on exam scores. They predicted that...
Question 1 FLAG QUESTION In a study to investigate whether pet therapy improves exam scores, students who interacted with a therapy pet scored higher than students who did not. Which of the following is closest to describing what 'internal validity' refers to for this study? Answers A-D A the confidence that improved exam scores were attributed to the pet therapy, B the confidence that results of the study can be generalized to other students taking an exam. C experts having...
Elmo likes music. He wondered if listening to music while studying will improve scores on an exam. Fifty students who were to take the midterm in a week agreed to be part of a study. Half were randomly assigned to listen to classical music while studying for the exam. The other half were told not to listen to any music while studying for the exam. A hypothesis test is to be performed to determine if the average score of those...
For each of the following scenarios, (1) identify whether it’s observational study or experiment, and (2) identify explanatory variable and response variable. For each of the following scenarios, (1) identify whether it's observational study or experiment, and (2) identify explanatory variable and response variable. Studies conducted in New York City and Boston have noticed that more heart attacks occur in December and January than in all other months. Some people have tried to conclude that overindulgence causes the increased risk...
Question 202 pts Researchers conducted a study assessing the effects of aggression test scores on risk-taking behaviors and found that people who scored low on aggression were less likely to take risks than those who scored high on aggression. A different research group decided to conduct the same study, but added a condition to the independent variable, so that aggression had three conditions (low, medium, high) instead of two. The second study is an example of a: Group of answer...
(Case evaluation, Questions 26-39) In a study, the researchers were interested in seeing whether if Ariana Grande’s music can be sexually stimulating to men. The researchers decided to include male students from Hunter College, age ranging from 18-20, without pre-diagnosed sexual dysfunctions. Out of the possible N=10,538 students who meet the criteria for participation, 200 men were randomly selected by computer to participate. After having the participants sign the informed consent, the researchers randomly assigned these subjects into 4...
Question 5. [11 marks] IChapter 2] Consider the following studies: Study 1: A study was conducted to see if music can influence people's ability to remember. Memory was tested by giving people a series of pictures to look at for 10 minutes and then asking them to answer a series of questions about the pictures. A memory score was computed based on their answers. 120 people were recruited and randomly allocated to one of 4 groups: the first group did...
In this study, researchers were interested in knowing if the amount of coffee (none, one cup, 4 cups) and the time coffee was ingested (am v. pm) affected student exam performance (exams were in the evening). This study took place over a 3-day period. Students were randomly assigned to either ingest coffee in the morning (AM) or the evening (PM). On day one, students were given no coffee; on day two, students were given one cup of coffee; and on...
Question 5. 111 marks] (Chapter 2] Consider the following studies Study 1: A study was conducted to see if music can influence people's ability to remember Memory was tested by giving people a series of pictures to look at for 10 minutes and then asking them to answer a series of questions about the pictures. A memory score computed based on their answers. 120 people were recruited and randomly allocated to one of 4 groups: the first group did the...
1. Researchers want to examine the effect of scent on memory. A total of 9 people were recruited for the study. Each person randomly assigned to one of the three experimental groups. Each person was asked to read a passage from a book. A week later, each study participant was asked to recall as much information as they could from the previously read passage. Researchers determined a score for each subject representing the facts that have been correctly recalled. The data...
0. A group of statistics students wanted to investigate the effect of social media on a person's self- esteem. For this purpose, they conducted a study where participants were randomly assigned to one of three groups: browsing ENews for 2 minutes and then taking a survey, browsing Facebook for 2 minutes and then taking a survey, or a control group where the participants just took the survey. The survey, based on the Rosenberg self-esteem scale, was the tool used to...