Achalasia is a rare disease that causes serious digestive distress to patients. Specialists perform an operation on the esophagus to remedy the situation. However, high blood pressure is a side effect of this operation and the blood pressure of operated patients is believed to be 150 mmHg. A concerned specialist collected data on randomly selected 15 patients he operated on and found their average blood pressure to be 156 mmHg with a standard deviation of 12 mmHg. The p-value for a (Assume blood pressure hypothesis test that investigates whether the operation causes higher blood pressure than the common belief is

Achalasia is a rare disease that causes serious digestive distress to patients. Specialists perform an operation on the esophagus to remedy the situation. However, high blood pressure is a side effect of this operation and the blood pressure of operated patients is believed to be 150 mmHg. A concerned specialist collected data on randomly selected 15 patients he operated on and found their average blood pressure to be 156 mmHg with a standard deviation of 12 mmHg. The p-value for a (Assume blood pressure hypothesis test that investigates whether the operation causes higher blood pressure than the common belief is

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The size of the left upper chamber of the heart is one measure of cardiovascular health. When the upper left chamber is enlarged, the risk of heart problems is increased. A paper described a study in which the left atrial size was measured for a large number of children ages 5 to 15 years. Based on this data, the authors concluded that for healthy children, left atrial diameter was approximately normally distributed with a mean of 26.2 mm and a standard deviation of 4.8 mm. (You may need to use a table or technology. Round your answers to four decimal places.) Approximately what proportion of healthy children have left atrial diameters less than 24 mm? Approximately what proportion of healthy children have left atrial diameters greater than 32 mm? Approximately what proportion of healthy children have left atrial diameters between 25 and 30 mm? For healthy children, what is the value (in mm) for which only about 20% have a larger left atrial diameter? mm
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