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.
An Overview of Osteoarthritis Flare-Ups. Osteoarthritis flare-up symptoms include joint pain, tenderness, and stiffness. The range of motion of the affected joint is limited. There are several ways to reduce the severity of flare-ups including exercising, losing weight, and resting. slide 1 of 5.