A researcher evaluates a treatment effect using a two-tailed hypothesis with α = .05 and the decision is to reject the null hypothesis. If the researcher switched to a one-tailed test using the sample, what decision should be made?a. definitely reject null with α = .05 and may be reject with α = .01b. definitely reject null with α = .05 and with α = .01c. Fail to reject null with either α .05 or with α= .01d. It is impossible to predict the outcome of the one-tailed test

Rejection rule: Reject the null hypothesis if p-value is less than the level of significance.

Answered: A researcher evaluates a treatment…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A researcher evaluates a treatment effect using a two-tailed hypothesis with α = .05 and the decision is to reject the null hypothesis. If the researcher switched to a one-tailed test using the sample, what decision should be made?
a. definitely reject null with α = .05 and may be reject with α = .01
b. definitely reject null with α = .05 and with α = .01
c. Fail to reject null with either α .05 or with α= .01
d. It is impossible to predict the outcome of the one-tailed test

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