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Unformatted text preview: 1tailed test) o If it’s not equal to inequality (both tails twotailed test) • The null hypothesis must ALWAYS HAVE SOME FORM OF EQUALITY (Equal, greater than or equal to, less than or equal to) • The Zcritical or rejection region These are values that are consistent with the alternative hypothesis • Type I error – (alpha)% of the time we reject the null hypothesis when the null hypothesis is true • Type II error – (alpha)% of the time we fail to reject the null hypothesis when the null hypothesis is false. FOR ALL CONFIDENCE INTERVALS, WRITE THE FOLLOWING: KEY IMPORTANT WRITTEN PART : Since the value for the test statistic lies in the critical region, we reject the null hypothesis { place context of problem here } [In this case, the null hypothesis is that the number of defects is 40]...
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This note was uploaded on 06/03/2009 for the course ECON 203 taught by Professor Casler during the Spring '09 term at Allegheny.
 Spring '09
 Casler
 Economics

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