A drug manufacturer is interested in the proportion of persons who have hypertension (elevated blood pressure) whose condition can be controlled by a new drug the company has developed.

A study involving4200 individuals with hypertension is conducted, and it is found that80% of the individuals are able to control their hypertension with the drug. Assuming that the4200 individuals are representative of the group who have hypertension, answer the following questions.

(a) What is the population?the 4200 people in the studythe drug manufacturer all individuals who have hypertension and use prescription drugs to control it

(b) What is the sample?the 4200 people in the studyall individuals who have hypertension and use prescription drugs to control it the drug manufacturer

(c) Identify the parameter of interest.the proportion of the sample for which the drug is effectivethe number of individuals in the sample for which the drug is effective the number of individuals in the population for which the drug is effectivethe proportion of the population for which the drug is effective

(d) Identify the statistic.the proportion of the population for which the drug is effectivethe number of individuals in the sample for which the drug is effective the number of individuals in the population for which the drug is effectivethe proportion of the sample for which the drug is effective

Give the value of the statistic.

(e) Do we know the value of the parameter?YesNo