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In a hypothetical study of a new drug called Xastin, researchers found that Xastin reduced childblains...

In a hypothetical study of a new drug called Xastin, researchers found that Xastin
reduced childblains by 10%, rejecting the null hypothesis of no effect (P = 0.04). The
older drug, Zastin showed no statistically significant effect; that is, the null hypothesis of
no effect could not be rejected. The researchers concluded that Xastin was better than
Zastin. Was this a valid conclusion? Explain.

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Answer #1

The null hypothesis means there is no such significant difference between the experiment and the control population. The difference that we are getting is mainly because of experimental errors and other variables. So for a significant result, the null hypothesis should be rejected.

For Zastin, the null hypothesis could not be rejected that means the difference in the control and experimental sets may be due to experimental/sampling errors.

For Xastin, the null hypothesis can be rejected and the difference of 10% is significant between control and experimental sets. So Xastin is better than Zastin.

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