1. Hypotheses
    1. Alternative Hypothesis -
    2. Null Hypothesis -
    3. Decisions
      1. assume Ho is true and calculate the probability of getting the results by chance alone
      2. If the obtained probability is equal to or less than a critical probability (alpha level) we reject Ho/ thus accepting H1
      3. If greater fail to reject/retain Ho
  2. Binomial Distribution
    1. When considering chance alone p = .50
    2. Use table compare to alpha = .05
  3. Error Types
    1. Type I - decide to reject Ho when Ho is false
    2. Type II - decide to retain Ho when Ho is true

     

    State of Reality

    Decision

    H0 is true

    H0 is false

    Retain H0

    Correct Decision

    Type II error

    Reject H0

    Type I error

    Correct Decision

     

  4. Alpha Level - probability of making a Type I error, set in advance
    1. Consequences
    2. Tend to use .05 or .01
  5. Evaluate the Tail of the Distribution
    1. Refer to table
    2. One vs. Two tails
  6. Size of Effect: Significant vs. Important
    1. If reject Ho then results are significant
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