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Unformatted text preview: b & & z ± ± b & ± & Hence, we would reject the null hypothesis H : & = & in favor of the alternative hypothesis H a : & > & if b & lies outside the lowertail con&dence interval. . (3) ( Lowertail Test ) The rejection region for testing H : & = & against H a : & < & (where & is a speci&ed values of & ) at level ± is given by b & & & ² b & < & z ± Thus, the acceptance region is given by b & & & ² b & ± & z ± or & ² b & + z ± ² b & which is equivalent to an uppertail con&dence interval for & with con&dence coe±cient 1 & ± , & ² b & + z ± ² b & Hence, we would reject the null hypothesis H : & = & in favor of the alternative hypothesis H a : & 6 = & if b & lies outside the uppertail con&dence interval. 2...
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 Spring '08
 Cheng
 Standard Error, Null hypothesis, Statistical hypothesis testing, alternative hypothesis Ha, dence interval

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