1. Null hypothesis is always about “no difference, no effect, or no relationship

Question

1. Null hypothesis is always about “no difference, no effect, or no relationship”. True or False? Why?

2. A researcher studied the effect of a new medication in reducing muscle pain. He claimed that the null hypothesis to be tested is H0 : X¯ control = X¯ treatment. True or False? Why?

3. H0 is rejected when the p-value is larger than the significance level . True or False? Why?

4. H0 is accepted when the p-value is larger than the significance level . True or False? Why?

5. We do not directly prove the research hypothesis; instead, we try to disprove the opposite of it. True or False? Why?

Explanation / Answer

1) the statement is true because the null hypothesis is always about the opposite of what we need to prove. hence the statement is true.

2) this statement is true as the x control will depend maily upon the treatment by the medication

3) this statement is false because we have to accept the null hypothesis when p value is greater then significance level

4) yes this statement is true as we have to accpet the null hypothesis whenever the p value is greater then significance level

5) this statement is false as we have to check the test static and through the p vaue we judge whether to accpet or reject the research experiment.

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