Tuesday

March 31, 2015

March 31, 2015

Posted by **Valeria** on Sunday, June 30, 2013 at 5:15pm.

No Treatment (X1) Treatment (X2)

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The assignment (1–2 pages):

Please respond to the following questions related to the research study and data presented in the "To Prepare" section.

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

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What are the independent and dependent variables?

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

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

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What is the df?

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

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Consider that tobt = 1.49. Report the statistical results using the correct format.

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What should Martha conclude?

I am very confused, the last paper I did it all wrong. Help please

- psych statistics -
**Kuai**, Sunday, June 30, 2013 at 7:11pmdependent variable

One tail

df = 9

t = (dbar-mud)/sd/sqrt(n)

t = (2-0)/2.9439/sqrt(10)

t = 2.15

test statistic = 2.15

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