Mathematics, 27.09.2019 21:20 JeroMii

Aresearcher conducts a repeated-measures study to evaluate a treatment with a sample of n = 16 participants and obtains a t statistic of t = 1.94. the treatment is expected to increase scores and the sample mean shows an increase. which of the following is the correct decision for a hypothesis test using α = .05.
- reject the null hypothesis with either a one-tailed or a two-tailed test
- fail to reject the null hypothesis with a one-tailed test but reject with two tails
- reject the null hypothesis with a one-tailed test but fail to reject with two tails
- fail to reject the null hypothesis with either a one-tailed or a two-tailed test

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