# L calculate the pooled standard deviation for the

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l. Calculate the pooled standard deviation for the populations (use the pooled variance calculated in question f); and then calculate the standardized effect size of this test. (2 points total: 1 for pooled standard deviation, 1 for effect size. Deduct .5 if a result is wrong but the process is correct.)
PSY230 SummerA2019 m. Draw a conclusion based on the hypothesis test result and the effect size. In other words, did encoding condition have a significant effect on memory score? Was the effect small, medium, or large? (1 point total: .5 for each element). There is a significant difference in memory between subjects exposed to different encoding conditions. Q2) Independent-Samples t-Test (20 points total) In a research project, researchers collected demographic and health data from a sample of elderly residents in the community. To examine any possible gender differences in their sample, they want to see if the females and the males differ significantly on the education level (number of years of formal schooling). The researchers are not predicting any direction in the possible gender differences so the hypotheses should be non-directional. They would like to run a two-tailed test with α = .10. Male Subject ID Education Female Subject ID Education 1 12 11 2 12 12 3 14 13 4 12 14 5 16 15 6 16 16 7 12 17 8 14 18 9 16 19 10 16 20 21 16 22 16 a. What is the dependent (outcome) variable? What is the independent (grouping) variable? (2 points total: 1 for each variable) 16 16 18 16 16 14 16 12 18 18
b. Create the null and alternative hypotheses (non-directional) for this study, using both words and symbol notation (2 points total: 1 for each hypothesis, with .5 for written and .5 for symbol notation)
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c. Calculate M1 andM2(2 points total: 1 point per sample mean, .5 if process is accurate but the result is calculated incorrectly)