1 If the test statistic follows the t distribution, then the decision rule will be based on the t distribution. The appropriate critical value will be selected from the t distribution again depending on the specific alternative hypothesis and the level of significance.  The third factor is the level of significance.
Often there are no, or only mild, symptoms. When it affects the lungs there may be wheezing, cough, shortness of breath, or chest pain. Some may have Lofgren's syndrome in which there is fever, large lymph nodes, arthritis, and a rash known as erythema nodosum. The cause of sarcoidosis is unknown.
Symptoms of Pleurisy. The list of signs and symptoms mentioned in various sources for Pleurisy includes the 11 symptoms listed below: Chest pain. Mild chest pain. Severe chest pain. Chest pain on movement. Chest pain on breathing. Chest pain on coughing. Shallow breathing - often because pain results from deeper breathing.