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In: Statistics and Probability

A sample of n = 16 individuals is selected from a population with µ = 30....

A sample of n = 16 individuals is selected from a population with µ = 30. After a treatment is administered to the individuals, the sample mean is found to be M = 33. A. Assume that the sample variance is s2 = 16. Compute a single sample t-test to evaluate if the treatment produced a significant effect and calculate r2 to measure the size of the treatment effect. Use a two-tailed test with α = .05. B. Now, assume that the sample variance is s2 = 64,. Compute a single sample t-test to evaluate if the treatment was effective and calculate r2 to measure the size of the treatment effect. Use a two-tailed test with α = .05.

Solutions

Expert Solution

a) Test for Single Mean:

Effect Size:

which is medium effect

b) Test for single mean:

Effect Size:

orchestra answered 2 years ago
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