Reference no: EM131327472
Answer the following questions:
1. Define inferential statistics and how researchers use inferential statistics to draw conclusions from sample data.
2. Define probability and discuss how it relates to the concept of statistical significance.
3. A researcher is studying the effects of yoga on depression. Participants are randomly assigned to one of two groups: yoga and medication (experimental group); or support group and medication (control group). What is the null hypothesis? What is the research hypothesis?
4. In the scenario described in the previous question, the researcher implements two programs simultaneously: a 6-week yoga program coupled with medication management and a 6-week support group program coupled with medication management. At the end of the 6 weeks, participants complete a questionnaire measuring depression. The researcher compares the mean score of the experimental group with the mean score of the control group. What statistical test would be most appropriate for this purpose and why? What is the role of probability in this statistical test?
5. In the scenario described in the previous questions, the researcher predicted that participants in the experimental group-yoga plus medication-would score significantly lower on measures of depression than would participants in the control group-support group plus medication. True or false: A two-tailed test of significance is most appropriate in this case. Explain your response.
6. Explain the relationship between the alpha level (or significance level) and Type I error. What is a Type II error? How are Type I and Type II errors different?
7. A researcher is studying the effects of sex-male and female-and dietary sugar on energy level. Male and female participants agree to follow either a high sugar or low sugar diet for eight weeks. The researcher asks the participants to complete a number of questionnaires, including one assessing energy level, before and after the program. The researcher is interested in determining whether a high or low sugar diet affects reported energy levels differently for men and women. At the end of the program, the researcher examines scores on the energy level scale for the following groups: Men - low sugar diet; Men - high sugar diet; Women - low sugar diet; Women - high sugar diet. What statistic could the researcher use to assess the data? What criteria did you use to determine the appropriate statistical test?
|
Is a foreclosure sale sometimes desirable
: Is a foreclosure sale sometimes desirable or even necessary when the mortgagor is willing to give a voluntary deed?
|
|
Discuss the specific genre of the chosen film
: You should structure your final project to address the items listed below, but you should also draw on other concepts you have learned throughout the semester to show your mastery of the diverse aspects of American cinema discussed in this course...
|
|
What is the banks position concerning the possibility
: Sedgewick arranged for an open-end construction loan from the Second National Bank not to exceed $50,000.- What is the bank's position concerning the possibility of intervening liens?
|
|
Effective organizational training programs
: Present an idea for a new training program or component to the existing training program which would promote employee engagement
|
|
What is the research hypothesis
: A researcher is studying the effects of yoga on depression. Participants are randomly assigned to one of two groups: yoga and medication (experimental group); or support group and medication (control group). What is the null hypothesis? What is th..
|
|
What examples of logos pathos or ethos can be found
: What examples of logos, pathos or ethos can be found in Tattoos on the Heart? How does Boyle make use of these strategies, and are they effective? Why or why not?
|
|
What was the war of 1812 about
: You have been asked to sign the Declaration of Independence. Examine the document in detail, and then explain your decision to sign or not sign as if you were a colonial of that era. What are the main arguments in the document in favor of independ..
|
|
Select one film to watch and write a page response
: Select one film to watch and write a one-page response over it, relating it to themes of global history discussed in class.Gandhi (1982).Dir: Richard Attenborough, With Ben Kingsley.Richard Attenborough's hagiography of modern India's founder.
|
|
Summarize the current organizational training program
: Present an idea for a new training program or component to the existing training program which would promote employee engagement
|