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Cards In This Set
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Hypothesis
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Statement about a apopulation parameter subject to verification
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What is hypothesis testing
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A procedure based on sample evedence and probability theory to determine whether the hyphtesis is a reasonable statement
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Hypothesis testing not not try to prove a statement, instead it provides a
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Proof beyond a reasonable doubt
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What are the 5 steps? in order
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Step:
1. state a null and alternate hypothesis 2. select a level of significance 3. indentify the test statistic 4. formulate a decision rule 5. take a sample arrive at a decision a. do not reject Ho b. reject Ho accept H1 |
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Step 1. state the null hypthesis and the alter hypthesis
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X
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Null hypthsis
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A statement about the vlaue of a population parameter developed for the purpose of testing numberical evidence.
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Ho
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Null hypothesis, h sub zero
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Failed to disprove Ho
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Ho is not true
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What does the the "o" stand for?
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Not or no,
no change |
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How do normally start a null hypothesis
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There is no significant difference between
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The sample statistic is normally different then the
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Population parameter
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Alternative
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A statement that is accepted if the sample data provide sufficient eveidence that the null hypothesis is false
you have rejected the null hypothesis |
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H sub one
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H1: also called the research hypthesis
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When do you choose the alter nate hypothesis?
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If the sample data provide us with enough statistical evidence that the null hypo is false
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Ho: u=15
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The equal sign ALWAYS goes with the null hyppthesis
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