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

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2
Q

Define critical region

A

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

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3
Q

Define significance level

A

is the probability of incorrectly rejecting H0

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4
Q

If the test statistic is in the critical region…

A

You have sufficient evidence to reject H0

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5
Q

If the test statistic is not in the critical region…

A

You have insufficient evidence to reject H0

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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
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