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24 May 2021
A researcher is evaluating the influence of a treatment using a sample selected from a normally distributed population with a mean of u = 80 and a standard deviation of o = 20. The researcher expects a 12-point treatment effect and plans to use a two-tailed hypothesis test with a .05.
a. Compute the power of the test if the researcher uses a sample of n = 16 individuals. (See Example 8.6.)
b. Compute the power of the test if the researcher uses a sample of n = 25 individuals
A researcher is evaluating the influence of a treatment using a sample selected from a normally distributed population with a mean of u = 80 and a standard deviation of o = 20. The researcher expects a 12-point treatment effect and plans to use a two-tailed hypothesis test with a .05.
a. Compute the power of the test if the researcher uses a sample of n = 16 individuals. (See Example 8.6.)
b. Compute the power of the test if the researcher uses a sample of n = 25 individuals
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