Statistical Problems Essay Example | Topics and Well Written Essays - 1250 words - 1

Statistical Problems - Essay Example The approximation becomes better with increasing sample size The simple random sample of 50 women with one job is greater than 30. Therefore, in this case Central Limit Theorem is applicable and the distribution of the sample can be assumed as normally distributed. (b) The percentage of all samples of 50 women with one job that have the mean length of time employed within 20 weeks of the population mean is (approximately) equal to the area under the normal curve with parameters  µ and 13.01 that lies between  µ - 20 and  µ + 20. The corresponding z-scores are: (c) No. If I bought one bag of water-softener salt and it weighed 39 lb, I would not consider this evidence that company’s claim is incorrect. Because there is 25.14% probability that the weight of one randomly selected bag of water softener salt will be 39lb or less. (d) Yes. If I bought 10 bag of water-softener salt and it mean weight was 39 lb, I would consider this evidence that company’s claim is incorrect. Because there is only 1.74% probability that the mean weight of 10 randomly selected bag of water softener salt will be 39lb or

Conventional pharmacological therapies for ischaemic heart diseases Essay - 1

Conventional pharmacological therapies for ischaemic heart diseases and heart failure - Essay Example In the case of myocardial failure abnormality exists in the myocardium which leads to inability of myocardium to fulfill its required function to the heart. This leads to heart failure. In circulatory heart failure, the abnormality of circulation takes place. Any abnormality of circulation responsible for the inadequacy in the body tissue perfusion, for example, changes of vascular tones, decreased blood volume and disorder of heart function. The treatment of pathophysiology given by doctors is that they try to decrease the frequency of angina attack so that the prevention of acute coronary syndromes such as; MI could be survived. There are various treatments which could be given to the patient in case to prevent heart disease or heart failure. Some patients can be treated by the help of Bypass surgery, Left ventricular assist device (LVAD), Heart valve surgery, Infarct exclusion surgery or Heart transplant. All these treatments depend on the patient’s current state. (Heart Fa ilure Treatment)The proper diet helps to prevent heart failure which includes; fruits, vegetables, low fat products, eggs, meat, seafood, nuts, beans, peas etc. This could be done by taking the control over cholesterol improvement, blood pressure control, serum glucose control and smoking habits in the patients. (How Is Heart Failure Treated? )This whole treatment depends on after the doctor diagnoses the exact stage of heart failure. Heart failure can also be treated by the therapy of drugs treatment. The usage of such drugs might result in the cardiac of Congestive heart failure (CHF). Congestive heart failure is a clinical syndrome, which is developed due to the accumulation of the blood. The blood which is in front of the left heart or the blood on the right parts of the heart (Hanacek). The drugs may put the effect on cardiac preload, cardiac afterload or myocardial contractility. Those drugs which increase the cardiac preload or afterload will be harmful for the patient, and