A researcher administers a treatment to a sample of participants selected from a population with ยต = 80. If a hypothesis test is used to evaluate the effect of the treatment, which combination of factors is most likely to result in rejecting the null hypothesis?

1. a sample mean near 80 with a = .05

2. a sample mean near 80 with a = .01

3. a sample mean much different than 80 with a= 0.5

4. a sample mean much different than 80 with a= .01

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