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A sample is selected from a population with = 10. After a treatment is administered to the individuals in the sample, the mean is
A sample is selected from a population with = 10. After a treatment is administered to the individuals in the sample, the mean is found to be M= 14 and the variance is s = 16.00. For a sample of n = 8 scores, carry out all 4 steps of a hypothesis test (a through d below) to evaluate the significance of the treatment effect. Use a two-tailed test with an alpha level of .05. Round to three decimal places as needed. You can type out your work here or upload your work. a. State the hypotheses (Ho and H) (4 points): b. State the degrees of freedom and locate the critical region using the t distribution table (2 points): c. Compute the test statistic (8 points): d. Make a decision about the null hypothesis, and state a conclusion (2 points): e. Calculate Cohen's d to measure the size of the treatment effect (4 points. 2 points for work, 2 points for correct d value). Cohen's d =
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