Statistical tests can be either one or two-sided, and this is important for finding the critical value of a test. Below are three possible null and alternative hypotheses for a single sample mean test. Given the same alpha, each of the three tests would have a different critical value (or values).
Warning Signs of Osteoarthritis. 1  Pain and stiffness in a joint after getting out of bed or sitting for long. 2  Swelling in one or more joints, especially those at the ends of the fingers (closest to the nail), thumbs, neck, lower back, knees, and hips. 3  Crunching feeling or the sound of bone rubbing on bone.
People with osteoarthritis often have joint pain and reduced motion. Unlike some other forms of arthritis, osteoarthritis affects only joints and not internal organs. Rheumatoid arthritis-the second most common form of arthritis-affects other parts of the body besides the joints.steoarthritis can occur in any joint. It occurs most often in the hands, knees, hips, and spine. Warning signs of osteoarthritis are: 1  Stiffness in a joint after getting out of bed or sitting for a long time. 2  Swelling or tenderness in one or more joints. 3  A crunching feeling or the sound of bone rubbing on bone.