Statistical hypothesis testing 2

Question 1

Define critical value

Answer 1

1st value of the test statistic in the critical region

Question 2

Define critical region

Answer 2

set of values of the test statistic for which you reject H0

Question 3

Define significance level

Answer 3

is the probability of incorrectly rejecting H0

Question 4

If the test statistic is in the critical region…

Answer 4

You have sufficient evidence to reject H0

Question 5

If the test statistic is not in the critical region…

Answer 5

You have insufficient evidence to reject H0

Question 6

Two methods to use when dealing with 2 tailed tests

Answer 6

• 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