STAT 1000Q Lecture Notes - Lecture 23: Test Statistic, Standard Deviation, Disc Brake
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Stat 1000q lecture 23 - right tailed, left tailed, and two tailed tests of. Compute area under the right tail of the n(0, 1) distribution to the right of test statistic z. P-value < : reject h0 because the test statistic is in the rejection region. P-value not less than : fail to reject h0. Since p-value = 0. 036 < 0. 05 = signi cance level, we reject h0 and conclude that the bottles are being over lled by a statistically signi cant amount, at signi cance level = 0. 05. Example 2: fast food chain claims that their big whopper has 825 calories, standard deviation = 50 calories, n = 81 big whoppers, x = 832. 5, signi cance level = 0. 25 source: professor apruzese"s lecture, page. Since 0. 089 > 0. 025, we don"t reject h0, and conclude that = 825 is consistent with the data. There is insuf cient evidence to conclude that > 825 at signi cance level = 0. 025.
