Problem No.4 Given Histogram shows the distribution of serum cholesterol level i

Question

Problem No.4 Given Histogram shows the distribution of serum cholesterol level in milligrams per deciliter for a sample of men. Healthy serum cholesterol level is less than 200 mg/dL. Borderline high risk level: 200-240 mg/dL. High risk level: greater than 240 mg/dL 0.20 0.15 0.10 0.05 100 150 200 250 300 Serum cholesterol (mgldt) Use the histogram to estimate the following (a) Is the percentage of men with cholesterol levels below 240 mg/dL closest to 30%, 50% or 70%? (b) In which interval are there more men: 100-200 mg/dL or 240-340 mg/dL?

Explanation / Answer

a) Cholestrol below 240 mg/dL is close to 50% as the distribution looks approximately normal. [0.20+0.12+0.10+0.05+...]

b) 100-200 has more men than 240-300. THis can be found out by summing up the frequencies.

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