2. A research study was conducted to examine the differences between older and younger adults on perceived life satisfaction. A pilot study was conducted to examine this hypothesis. Ten older adults (over the age of 70) and ten younger adults (between 20 and 30) were give a life satisfaction test (known to have high reliability and validity). Scores on the measure range from O to 60 with high scores indicative of high life satisfaction; low scores indicative of low life satisfaction. The data are presented below. Compute the appropriate t-test. Older Adults You ngr Adults 45 34 38 22 52 15 48 27 25 37 39 41 51 24 46 19 55 26 E 3i Mean = 44.5 Mean = 28.1 S = 8.682677518 S = 8543353492 52 = 75.388888888 $2 = 71988888888 What is your computed answer? What would be the null hypothesis in this study? What would be the alternate hypothesis? What probability level did you choose and why? What is your tcrit? Is there a significant difference between the two groups? Interpret your answer. If you have made an error, would it be a Type I or a Type II error? Explain your answer. WHF'P'PP'N!' 1. Researchers want to examine the effect of perceived control on health complaints of geriatric patients in a long-term care facility. Thirty patients are randomly selected to participate in the study. Half are given a plant to care for and half are given a plant but the care is conducted by the staff. Number of health complaints are recorded for each patient over the following seven days. Compute the appropriate ttest for the data provided below. Control over Plant No Control over Plant 23 35 12 21 6 25 15 24 18 17 5 23 21 37 18 22 34 16 10 38 23 23 14 41 19 27 23 24 2 Mean = 16.6 Mean = 27.066666666 S = 7.790103612 S = 1741047056 52 = 6068571429 S2 = 5992380952 What is your computed answer? What would be the null hypothesis in this study? What would be the alternate hypothesis? What probability level did you choose and why? What are your degrees of freedom? Is there a significant difference between the two groups? Interpret your answer. If you have made an error, would it be a Type | or a Type II error? Expiain your answer. POT'JSDWPWI'J!\