For a discrete random variable, X, its expected value is given by Select one: 01 Ο Σ.P(X) Ο ΣΡ(Χ) O P(X) Δ Time left 0:

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For a discrete random variable, X, its expected value is given by Select one: 01 Ο Σ.P(X) Ο ΣΡ(Χ) O P(X) Δ

Time left 0:55: You are attempting to establish a link between diets high in trans fatty acids and early heart disease. You identify 50 patients with early heart disease and determine through interviews that 25 had diets high in trans fatty acids. You then gather 150 controls who do not have early heart disease but are of similar age, sex, and socioeconomic status and determine that 50 had diets high in trans fatty acids. From the data you collected, calculate the odds ratio for trans fatty acid consumption and early heart disease. Select one: O 1.00 O 2.00 O 0.50 O 1.86

A study looked at the effects of oral contraceptive (OC) use on heart disease in women 40 to 44 years of age. It found that among 5,000 OC users at the baseline, 13 women developed a myocardial infarction (MI) over a 3-year period, whereas among 10,000 non-OC users, 7 developed an MI over a 3-year period. Then the risk ratio between OC users and non-OC users is about: Select one: O 0.0019 O 1.86 O 0.27 O 3.71

It has been determined that the levels of serum chloride follow a normal distribution with a mean of 88 mEq/L and a standard deviation of 12.3 mEq/L in normal healthy adults. Above what level of serum chloride will 20% of the population exhibit? Select one: O 98.332 O 103.774 O 77.668