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1) Does rejecting the null hypothesis mean that a treatment has an effect or not? 2)...

1) Does rejecting the null hypothesis mean that a treatment has an effect or not?

2) If a treatment does not have an effect- should we reject or fail to reject the null hypothesis?

Math   Statistics-And-Probability   
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Answer #1

1) Ans: Rejecting null hypothesis means that treatment has an effect.

2) Ans: If a treatment does not have an effect then we should accept the null hypothesis.

Since the null hypothesis and alternative hypothesis statement are given by-

Null hypothesis: the treatment has no effect.

Or, there is no significant difference among treatment effects.

Alternative hypothesis: The treatment has an effect.

Or, there is a significant difference among treatment effects.

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