Biostatistic ( t test)

 Explanation from: https://www.youtube.com/watch?v=sVDPJlbGj1I

Case Study 3 ( 25 marks) Researchers went 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. The number of health complaints  is recorded for each patient over the following seven days. Compute the appropriate t-test for the data provided below. Control over plant  No control over plant 23 35 12 21 6 26 15 24 18 17 5 23 21 37 18 22 34 16 10 38 23 23 14 41 19 27 23 24 8 32

Case Study 4 (25 Marks) Sleep researchers decide to test the impact of REM sleep deprivation on a computerized assembly line task. Subjects  are required to participate in two nights of testing.  On the nights of testing EEG,EMG,EOG measures are taken.  On each night of testing the subject is allowed a total of four hours of sleep. However, on one of the nights, the subject  is awakened immediately upon achieving REM sleep. On the alternate night, subjects are randomly awakened at various times throughout the 4 hour total sleep session. Testing conditions are counterbalanced so that half of the subject experience  REM deprivation on the first night of testing and half experience REM deprivation on the second night of testing.  Each subject after the sleep session is required to complete a computerized assembly line task. The task involves  five rows of widgets slowly passing across the computer Randomly placed on a one/five ratio are widgets missing a  component that must be "fixed" by the subject. The number of missed widgets is recorded. Compute the appropriate  t-test for the data provided below. REM Deprived Control Condition 26 20 15 4 8 9 44 36 26 20 13 3 38 25 24 10 17 6 29 14