Question

The following hypothesis test is planned:

H0: Smoking during pregnancy does not affect fetal health.

HA: Smoking during pregnancy is harmful to fetal health.

Which significance level is most appropriate: 1%, 5%, or 10%? Justify your answer in 3-4 sentences, commenting on potential outcomes of type I and type II errors

Answer 1

Smoking during pregnency is a serious issue.So we test this type of hypothesis very causiously allowing less percentage of error.

Therefore here we will choose 1% level of significance because we know that a test of 1% level of significance is also a test for level of significance where >0.01.

Now we know that Type I error is the error of rejecting the true null hypothesis, and Type II error is the error of accepting the false null hypothesis.Here we've already minimized Type I error by settiing the level of significance to 1% and under this condition we will minimize Type II error.

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