Hypotheses

Question 1

What is a hypothesis?

Answer 1

A testable statement which clearly states the relationship between variables being investigated.

Question 2

What are the 3 types of hypotheses?

Answer 2

-Directional/One Tailed.
-Non-Directional/Two Tailed.
-Null.

Question 3

A researcher investigates whether Calpol or a placebo will be more effective in reducing OCD symptoms.

Give a directional/one tailed hypothesis for this experiment.

Answer 3

Participants who take Calpol (for 24 weeks) would experience less OCD symptoms than participants who take a placebo (for 24 weeks).

Question 4

A researcher investigates whether Calpol or a placebo will be more effective in reducing OCD symptoms.

Give a non-directional/two tailed hypothesis for this experiment.

Answer 4

There will be a difference in the number of symptoms reduced between Calpol users (for 24 weeks) and placebo users (for 24 weeks).

Question 5

A researcher investigates whether Calpol or a placebo will be more effective in reducing OCD symptoms.

Give a null hypothesis for this experiment.

Answer 5

There will be no difference in the number of symptoms reduced between Calpol users (for 24 weeks) and placebo users (for 24 weeks).