SOLUTION: The distribution of cholesterol levels in teenage boys is approximately normal with μ = 170 and σ = 30. Levels above 200 warrant attention. What percent of teenage boys have le

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Question 1181079: The distribution of cholesterol levels in teenage boys is approximately normal with μ = 170 and σ = 30. Levels above 200 warrant attention. What percent of teenage boys have levels that warrant attention?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
z=(x-mean)/sd
z>(200-170)/30 or 1
z>1 has probability 0.1587 or 15.87%