A researcher predicts that scores in treatment A will be higher than scores in treatment B. If the mean for the 10 participants in treatment A is 4 points higher than the mean for the 10 participants in treatment B and the data produce t = 2.095, what decision should be made?​ a. ​With a = .05, reject H0 for a one-tailed test but fail to reject for a two-tailed test b. ​With a = .05, reject H0 for a two-tailed test but fail to reject for a one-tailed test ​c. With a = .05, fail to reject H0 for both a one-tailed and a two-tailed test ​d. With a = .05, reject H0 for both a one-tailed and a two-tailed test

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A researcher predicts that scores in treatment A will be higher than scores in treatment B. If the mean for the 10 participants in treatment A is 4 points higher than the mean for the 10 participants in treatment B and the data produce t = 2.095, what decision should be made?​

a. ​With a = .05, reject H0 for a one-tailed test but fail to reject for a two-tailed test
b. ​With a = .05, reject H0 for a two-tailed test but fail to reject for a one-tailed test
​c. With a = .05, fail to reject H0 for both a one-tailed and a two-tailed test
​d. With a = .05, reject H0 for both a one-tailed and a two-tailed test
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