Statistics question

Suppose that the heart beat per minute (bpm) of adult males has a normal distribution with a mean of u = 68.4 bpm and a standard deviation of o = 11.2 bpm. Instead of using 0.05 for identifying significant values, use the criteria that a value x is significantly high if P(x or greater) $ 0.01 and a value is significantly low if P(x or less) $ 0.01. Find the pulse rates for males that separate significant pulse rates from those that are not significant. Using these criteria, is a male pulse rate of 90 beats per minute significantly high? Find the heart rate (in bom) separating significant values from those that are not significant. A heart rate with a bom more than and less than are not significant, and values outside that range are considered significant. (Round to one decimal place as needed.)