6. A patient is hypokalemic (low blood potassium) if the level of potassium in the blood is 3.5 meg/l or less. However, a person's potassium level will vary from day to day. Suppose that repeated daily measures of one patient's blood potassium values are Normally distributed. with a mean of 3.7 and a standard deviation of 0.2. If this patient is measured over many days. on what proportion of days would the results indicate hypokalemia? (That is. what is the probability a patient with Normal blood potassium level of 3.7 would be diagnosed as hypokalemic?)