According to her doctor, Mrs. Hill's cholesterol level is higher than only 10% of the females aged 50 and over. The cholesterol levels among females aged 50 and over are approximately normally distributed with a mg and a standard deviation of 20 mean of 240 mg What is Mrs. Hill's cholesterol level? Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place. dL dL mg dL