Test 3.docx - Null Hypothesis a claim about population...

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Null Hypothesis a claim about population parameters and is identified by the symbol H0. contains =, greater than or equal, or less than or equal signs EX: The LSU students' average GPA is 3.45 H0: u=3.45 EX: 65% of LSU students are female H0: Pi = .65 Alternative Hypothesis the opposite of the null hypothesis and is identified by H1 contains doesn't equal, < or > signs may or may not be proven EX: The LSU students average GPA H1 U doesnt equal 3.45 insufficient If we fail to reject the null hypothesis (H0) we can conclude that there is _____________ evidence to warrant its rejection true If we reject the null hypothesis (H0) we have statistical proof that the alternative hypothesis (H1) is _________ larger In regards to critical values, Choosing a larger level of significance (a) results in a ________ rejection region Z If the standard deviation is known, use a _____ test T If the standard deviation is unknown, use a ____ test Type I Error occurs when we reject a null hypothesis (H0) that is true and should not be rejected
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