06. Quiz: Setting Up Hypothesis Tests

Setting up Hypothesis Tests

Use the three questions below to test your knowledge on setting up hypothesis tests.

QUIZ QUESTION::

Use your knowledge of hypothesis testing to match each statement to the hypothesis it describes.

ANSWER CHOICES:



Statement

Hypothesis

The average height of all people in the world is different than 68 inches tall.

The average height of all people in the world is less than 68 inches tall.

The average height of all people in the world is less than or equal to 68 inches

The impact of Drug A is on average the same as Drug B.

Drug A will on average have a larger impact than Drug B.

SOLUTION:

Statement

Hypothesis

The average height of all people in the world is different than 68 inches tall.

The average height of all people in the world is less than 68 inches tall.

Drug A will on average have a larger impact than Drug B.

The average height of all people in the world is less than or equal to 68 inches

The impact of Drug A is on average the same as Drug B.

The average height of all people in the world is different than 68 inches tall.

The average height of all people in the world is less than 68 inches tall.

Drug A will on average have a larger impact than Drug B.

The average height of all people in the world is less than or equal to 68 inches

The impact of Drug A is on average the same as Drug B.

The average height of all people in the world is different than 68 inches tall.

The average height of all people in the world is less than 68 inches tall.

Drug A will on average have a larger impact than Drug B.

Consider the following statement:

"Dyson air purifiers are the best."

Which set of hypotheses could accurately test this statement?

SOLUTION: Null: Dyson air purifiers **are not** the best. Alternative: Dyson air purifiers **are** the best.

Consider the following statement:

"The average height of a human is smaller than or equal to 70 inches."

Which set of hypotheses below is correctly set up based on this assertion?

SOLUTION: Null: The average height of a human is not greater than 70 inches. Alternative: The average height of a human is greater than 70 inches.