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2. A. 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 t-test for the data provided below. Control over Plant 23 12 6 15 18 5 21 18 34 1O 23 14 19 23 8 No Control over 35 21 26 24 17 23 37 22 16 38 23 41 27 24 32 Plant 0 What is the mean number of camplaints for each group? 0 What is the standard deviation for each group? 0 What would be the null hypothesis in this study? I- What probability level did you choose? Why? 0 What are your degrees offreedom? o Is there a significant difference between the two groups? Interpret your answer. 0 If you have made an error, would it be a Type I or a Type ll error? Explain your