Hypothesis Testing Review

Front

What is hypothesis testing?

Back

A statistical method used to make decisions about a population parameter based on sample data.

Front

Define null hypothesis (H0).

Back

The hypothesis that there is no effect or no difference, and it is the hypothesis that the test aims to reject.

Front

Define alternative hypothesis (Ha).

Back

The hypothesis that there is an effect or a difference, and it represents what the researcher aims to prove.

Front

What does a level of significance (α) represent?

Back

The probability of rejecting the null hypothesis when it is actually true, commonly set at 0.05.

Front

What is a left-tailed test?

Back

A hypothesis test where the alternative hypothesis states that the parameter is less than the value specified in the null hypothesis.

Front

What is a right-tailed test?

Back

A hypothesis test where the alternative hypothesis states that the parameter is greater than the value specified in the null hypothesis.

Front

What is a two-tailed test?

Back

A hypothesis test where the alternative hypothesis states that the parameter is different (either greater or less) from the value specified in the null hypothesis.

Front

What is a rejection region?

Back

The range of values for which the null hypothesis is rejected, determined by the level of significance.

Front

If the P-value is less than α, what is the conclusion?

Back

Reject the null hypothesis.

Front

If the P-value is greater than α, what is the conclusion?

Back

Fail to reject the null hypothesis.