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Unformatted text preview: 1tailed test) o If its 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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 Spring '09
 Casler
 Economics

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