Statistical hypothesis testing 2 Flashcards
Critical regions and 2 tailed tests
1
Q
Define critical value
A
1st value of the test statistic in the critical region
2
Q
Define critical region
A
set of values of the test statistic for which you reject H0
3
Q
Define significance level
A
is the probability of incorrectly rejecting H0
4
Q
If the test statistic is in the critical region…
A
You have sufficient evidence to reject H0
5
Q
If the test statistic is not in the critical region…
A
You have insufficient evidence to reject H0
6
Q
Two methods to use when dealing with 2 tailed tests
A
- using critical regions
split the significance level in half, one for each tail - using probabilities
double the probability you are going to find before comparing