ovascula ase Serum cholesterol is an important risk factor for coronary disease. We can show that serum cholesterol is approxi- mately normally distributed, with mean = 219 mg/di and standard deviation = 50 mg/dL. '5.14 If the clinically desirable range for cholesterol is < 200 mg/dL, what proportion of people have clinically desirable levels of cholesterol? '5.15 Some investigators believe that only cholesterol evels over 250 mg/dL indicate a high-enough risk for heart disease to warrant treatment. What proportion of the popu- ation does this group represent? '5.16 What proportion of the general population has borderline high-cholesterol levels–that is, > 200 but < 250 mg/dL?
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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