Could someone help me by answering A and B? Thank you!

The red blood cell counts (in millions of cells per microliter) for a population of adult males can be approximated by a normal distribution, with a mean of 5.6 million cells per microliter and a standard deviation of 0.5 million cells per microliter. (a) What is the minimum red blood cell count that can be in the top 27% of counts? (b) What red blood cell counts would be considered unusual? (a) The minimum red blood cell count is million cells per microliter. (Round to two decimal places as needed.)