12. The red blood cell count for a population of adult males can be approximated by a normal distribution, with a mean of 5.4 million cells per microliter and a variance of 0.16. What is the minimum...

Extracted text: 12. The red blood cell count for a population of adult males can be approximated by a normal distribution, with a mean of 5.4 million cells per microliter and a variance of 0.16. What is the minimum red blood cell count, in million cells per microliter, that can be in the top 20% of counts? (A) 5.190 (B) 5.609 (C) 5.316 (D) 5.483