Stat 115 Fall 2021 2 d. State your statistical decision (.5). e. Compute Cohen's d. Interpret what this d really means in this context (2) f. Compute 95% CI (2). g. What is your conclusion? Interpret the result. Don't forget to include statistical information as well (e.g., t-score, df, a, Cohen's d) (2). 2. The value of t-score in a hypothesis testing is influenced by a variety of factors. Assuming that all other variables are held constant, explain how the value of t is influenced by each of the following: (1.5) a. Increasing the difference between sample mean and the original population mean. The value of t will increase t = - M . b. Increasing the variability of scores. The value of t will decrease C. Increasing the number of people in the sample. The value of t will increaseStat 115 Fall 2021 Your name dermaan Bains Assignment 7 (due 10/13/21 - 10/20/21) One sample t-test (16 pts) 1. Oishi and Schimmack (2010) report that people who move from home to home frequently as children seem to have lower than average levels of well-being as adults. To further examine this relationship, a psychologist obtains a sample of n = 10 young adults who each experienced 5 or more different homes before they were 16 years old. These participants were given a standardized well-being questionnaire for which the general population has u = 39. The well-being scores for this sample are as follows: 39, 38 , 36, 40, 34, 34, 37 , 39, 33, 40 1= 10 On the basis of this sample, is well-being for frequent movers significantly different from well-being in the general population? Use a two-tailed test with a = .05. 1= 39 a. State the null hypothesis in words and in a statistical form (1). Ho = M = 39 ( not significantly different from the well being un general Population ) b. State the alternative hypothesis in words and a statistical form (1). H, = us 39 ( Significantly different from the well being in general population ) c. Compute the appropriate statistic to test the hypotheses. Sketch the distribution with the estimated standard error and locate the critical region(s) with the critical value(s) 6). [When you compute SS, you might want to use the definitional formula as it might be easier to compute SS this way]. two tailed = 0 0.05 of= 10-1=1 1ano , eith oracle Test Statalic = xc - le s .025 0 025 M