Chapter 7: hypothesis testing

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    martha morse-brown

    Cards (10)

    • hypothesis

      a statement made about a population parameter
    • hypothesis testing
      testing a sample of a population in order to see if a hypothesis can be assumed to be true
    • test statistic
      the result of the test calculated from the sample
    • null hypothesis
      written as h0:p=x
      it is the hypothesis you assume to be correct
    • alternative hypothesis
      written as h1:p<x or h1:p>x or h1:p=!x
      it is the parameter if our assumption is wrong
    • one tailed test
      there is only one critical region to be found, and the original significance level is used.
    • two tailed test
      there are two critical regions, and the significance level is halved
    • critical region
      it is the range of values that would lead you to reject h0
    • critical value
      the first value in the critical region
    • actual significance level
      the actual probability of a test statistic being in the critical region. it is the probability of incorrectly rejecting h0.
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