Independent samples t test or related samples t test

Assignment Help Basic Statistics

Reference no: EM1320983

Find whether to use independent samples t test or related samples t test and answer the following questions.

Martha believes that a relaxation technique involving visualization will help people with mild insomnia fall asleep faster. She randomly selects a sample of 20 participants from a group of mild insomnia patients and randomly assigns 10 to receive visualization therapy. The other 10 participants receive no treatment. Each participant is then measured to see how long (in minutes) it takes him or her to fall asleep. Martha's data are below. The numbers represent the number of minutes each participant took to fall asleep.

No Treatment (X₁)	Treatment (X₂)
22	19
18	17
27	24
20	21
23	27
26	21
27	23
22	18
24	19
22	22

a. Should Martha use an independent-samples t-test or a related samples t-test? Explain your answer.

b. What are the independent and dependent variables?

c. Using the fact that Martha believes the treatment will reduce the amount of time to fall asleep, state the null and alternate hypotheses.

d. Would you use a one-tailed or two-tailed test? Explain your response.

e. What is the df?

f. Consider that a = .05. Then use Appendix B, Table 2 to determine the critical value, state the value, and how you found it.

g. Consider that t_obt = 1.49. Report the statistical results using the correct format. What should Martha conclude?

Reference no: EM1320983

Questions Cloud

Bronfenbrenner ecological theory : Bronfenbrenner's ecological theory suggests that development is influenced by many sources, from family and friends to society and culture.

Narrative introduction about nordstroms company : Prepare a narrative introduction about Nordstroms Company that discusses the value of the company. Then discuss the external agents and strategic partners

Test the claim for actual percentage : Test the claim that the actual percentage is 53%. Use a 0.10 significance level.

Concepts and elements of e-commerce : Explain how you would use m-commerce concepts and elements of e-commerce to meet your objective.

Independent samples t test or related samples t test : Should Martha use an independent-samples t-test or a related samples t-test? Explain your answer.

Case study of phillips : Phillips was the principal promoter of the Waterloo Corporation, a corporation which was to have been incorporated not later than July 31, 2002. Among the many things to be accomplished prior to incorporation were the obtaining of capital

Null and alternative hypotheses for testing : Write the null and alternative hypotheses for testing if participants and non-participants differ in level of problem behavior (Y).

Determine the economic order quantity : Determine the Economic Order Quantity in Excel for: Price of Product: $150 Savings Rate: 12% Annual Usage: 16240 Cost of transportation: $200/order Cost of PO preparation: $60/order Warehouse Rental: $8/piece.

Analyzing data using spss glm procedure : Type the above data into the SPSS Data Editor window, or save this file as an unformatted text file and write SPSS syntax to read it in.

User Account

All Pages