Hypothesis test

Question 1

hypothesis

Answer 1

A clear statement of what you think your experiment will show.

Question 2

Hypothesis null or alternative

Answer 2

Null: the outcome will not be X
Alternative: the outcome will be X

Question 3

Hypothesis test

Answer 3

Used for:

The means of samples X and Y are different.

The variances of samples X and Y are different.

There is a relationship between variables A and B.

The data are normally distributed.

Question 4

Do I accept H0 or H1?

Answer 4

Different test depending if they’re parametric or non parametric (watch presentation)

Question 5

P-value

Answer 5

Generally if there is less than a 5% chance you would have obtained these data when H0 is true, we reject H0 and accept H1.

p<0.05 reject H0

And vice versa:
Generally if there is less than a 5% chance that these
data would have been obtained if H0 is true, we reject H0 and accept H

Question 6

Resumen

Answer 6

1. Using your data, calculate 
a test statistic
Look at the distribution for 
your test statistic when H0 is 
true
What is the probability of 
obtaining a test statistic of 
that value when H0 is true?