Unit 5B Test Review: Foundations of Hypothesis Testing

Front

What does it mean to 'fail to reject the null hypothesis'?

Back

There is not enough evidence to support the alternative hypothesis.

Front

What decision should be made if the p-value is greater than the significance level?

Back

Fail to reject the null hypothesis.

Front

What decision should be made if the p-value is less than the significance level?

Back

Reject the null hypothesis.

Front

What does a significance level of 0.05 mean in hypothesis testing?

Back

There is a 5% chance of rejecting the null hypothesis when it is true.

Front

What is the typical threshold for a significance level in many scientific studies?

Back

0.05

Front

What is a null hypothesis?

Back

A statement that there is no effect or no difference, and it is the hypothesis that researchers aim to test against.

Front

What is an alternative hypothesis?

Back

A statement that indicates the presence of an effect or a difference, opposing the null hypothesis.

Front

What is a p-value?

Back

The probability of obtaining test results at least as extreme as the observed results, assuming that the null hypothesis is true.

Front

What does it mean to reject the null hypothesis?

Back

It means there is sufficient evidence to support the alternative hypothesis.

Front

What is a Type I error?

Back

The error made when the null hypothesis is rejected when it is actually true.