STAT 503 Midterm II

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Author:
MRK
ID:
266545
Filename:
STAT 503 Midterm II
Updated:
2014-03-15 12:12:28
Tags:
Hypothesis
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Description:
Cards w/ Quiz III for Midterm II
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  1. Test Statistic equation
    ts = (ÿ - µ)/SE
  2. When to Reject
    • if ts is between tα/2 = fail to reject
    • if outside reject
  3. significance level
    maximum probability of making a type I error
  4. directional/ sidedness to test
    • if alternative ≠ = non-directional or 2-sided
    • if < or > = directional or 1-sided // put all α on one side
  5. computing prob of type II
    • if Alternate fixed = can do it
    • if < or > can't
  6. p-value
    • probability ts is at least as extreme is the ts observed
    • reject if p < α
    • pay attention to sign!!

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