Suppose the Probability That a Certain Drug Will Lower Cholesterol

question 18

Multiple Choice

Suppose the probability that a certain drug will lower cholesterol significantly is 0.85. If the drug is administered to 1300 patients, what is the probability that more than 1094 will have significantly lowered cholesterol levels? Round your answer to four decimal places. ​

• A)0.2073
• B)0.7894
• C)0.6828
• D)0.7550
• E)0.7927

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Definitions:

Population Variances

Measures the degree to which each number in a set differs from the mean of the population, calculated as the average of the squared differences from the Mean.

Normal Populations

Populations that exhibit characteristics of normal distribution, where data points tend to cluster around a central mean value.

Degrees Of Freedom

Degrees of freedom represent the number of independent values or quantities which can freely vary in an analysis without violating any constraints imposed on them.

Pooled Variance

A method used to estimate the variance of two or more populations when the mean of each population may differ but the true variance is assumed to be the same.