If the p value is less than or equal to, we reject the null hypothesis, otherwise we do not reject the null hypothesis. One tail and two tail tests. In a one tail test, the rejection region is at one end of the distribution or the other.In a two tail test, the rejection region is split between the two tails.4) Test statistic. As the population variance is known, we use z as the test statistic. (a) Distribution of test statistic. If the assumptions are correct and is true, the test statistic follows the standard normal distribution.
Cameron lesions are linear erosions or ulcerations of the mucosal folds lining the stomach where it is constricted by the thoracic diaphragm in persons with large hiatal hernias. The lesions may cause chronic blood loss resulting in iron deficiency anemia; less often they cause acute bleeding.
any pathological or traumatic discontinuity of tissue or loss of function of a part. Lesion is a broad term, including wounds, sores, ulcers, tumors, cataracts, and any other tissue damage. They range from the skin sores associated with eczema to the changes in lung tissue that occur in tuberculosis. lesion may be described as benign, cancerous, gross, occult, or primary. (1) Any pathological or traumatic discontinuity of tissue or loss of function of a part; a wounded or damaged area; an anatomic or functional tissue defect; an area of abnormal tissue change.