Intro to Hypothesis Testing 3.2

Question 1

Research hypothesis and predictions

Answer 1

•Research hypothesis – plausible explanation for the relationship
between variables
•Predictions – specific outcomes that would occur if the hypothesis
was true

Question 2

Sampling distributions

Answer 2

-Sampling distribution histogram y= number of samples, x= sample means

-When you measure multiple
samples from the same
population, you will get
different values

Question 3

Statistical hypothesis

Answer 3

makes a claim about the state of variables
within the framework of a statistical test

Null H:there is no statistically significant difference between the
group means

Alternative H:there is a statistically significant difference between
the group means

Question 4

Two tailed tests

Answer 4

•The mean of the experimental group is significantly larger OR smaller than
the control group

Question 5

One tailed test

Answer 5

•The mean of the experimental group is significantly larger than the control
•The mean of the experimental group is significantly smaller than the control
-less common