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The researchers collect their data and conduct the appropriate test of the hypotheses above. They observed the following results: test statistic: t = 2.1 t=2.1
The researchers collect their data and conduct the appropriate test of the hypotheses above. They observed the following results: test statistic: t = 2.1 t=2.1 p-value: 0.0265 0.0265 est. effect size: d ^ = 0.525 d ^ =0.525. Suppose the company testers at Canon realize that their digital timer was mis-calibrated and all 16 shutter speeds were exactly 0.0015 seconds faster than they originally thought. Suppose they correct their mistake, subtracting exactly 0.0015 seconds from each of their 16 measurements and rerun their test. Compared to their original hypothesis testing results, this new test will have... Choice 1 of 3: the same t-test statistic Choice 2 of 3: a t-test statistic that is larger (i.e., less negative than -2.1, zero, or possibly positive) Choice 3 of 3: a t-test statistic that is smaller (i.e., more negative than -2.1)
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