please help me Two Independent Groups t-Test 12.1 What is measured by the estima
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Two Independent Groups t-Test 12.1 What is measured by the estimaned standard eeror that is woed foe the ndependent measures : statistic? 122 One sample has n 15 with SS 1660, and a secood sample 15 wih 5- 1700. a Find the pooled vanance for the two sanples b Compote the estimated standard error Soe the sample ssean ditferesces i e for the two groups) If the sample mean difference (ie. M - M) s 8 pouts, is this enough to indicate a significant difference for a two-tailed test at the .05 level? d. If the sample ssean difference Ge. M.-M is 12 points, is dis enough o indicate a signoficant difference for a tws-tailed test at the 05 lever 12.3 Siegel (1990) found that elderly people who owned dogs were less likely to pay upsetting events than were tdhose who did aoc om pets visits to their doctors after S?milarty, coessader the following hypothetical data. A sample oe eldely dog owners is congpared to a simile exoup (in ferms of age ad health) who do not onm dogs The seserther recoeds the sumber olf visits to the doctor during the past year for each peraon. The data are as follows: Dag Owners Contral Grsp 12 10 14 a. Is there a sigaificant dufferesce in the sumber of dotor vists tetween do owners and costrol subgects? Use a twe tailed test with a 0sExplanation / Answer
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12.1) For the independent-measures t statistic, the estimated standard error measures the standard distance between a sample mean difference (M1 – M2) and a population mean difference (?1–?2). It also measures the standard or average size of the difference reasonable to expect between the two sample means (M1 – M2)
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