Assume the blood pressure readings are normally distributed with main 120 and standard deviation a a blood pressure reading a 145 or more may require medical attention what percent of people have a blood pressure reading greater than 145

Consider u = {x|x is a negative real number}which is an empty set? o {x|x eu and x has a negative cube root}o {x|x eu and x has a negative square root}{x|x eu and x is equal to the product of a positive number and -1}{x|x eu and x is equal to the sum of one negative and one positive number?