Hypothesis testing and errors in hypothesis testing

Front

What is the maximum allowable probability of making an error in a research study?

Back

Level of Significance

Front

What are the null and alternative hypotheses if the mean height of women is at most 64"?

Back

H₀: μ < 64"; Hₐ: μ > 64"

Front

What type of test expresses the alternative hypothesis using less than (<) or greater than (>)?

Back

One-tailed test or Directional Test

Front

What are the null and alternative hypotheses for a part that is supposed to weigh precisely 19 pounds?

Back

H₀: μ = 19; Hₐ: μ ≠ 19

Front

What type of test is characterized by the alternative hypothesis being written with a not equal sign?

Back

Two-tailed test or Nondirectional Test

Front

Define '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

Define 'Alternative Hypothesis'.

Back

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

Front

What is a 'One-tailed Test'?

Back

A hypothesis test that determines if there is a significant effect in one direction (either greater than or less than a certain value).

Front

What is a 'Two-tailed Test'?

Back

A hypothesis test that determines if there is a significant effect in both directions (either greater than or less than a certain value).

Front

What does 'Type I Error' refer to in hypothesis testing?

Back

Rejecting the null hypothesis when it is actually true.