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A pharmaceutical company wants to conduct a survey of 20 individuals who have high cholesterol...

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A pharmaceutical company wants to conduct a survey of 20 individuals who have high cholesterol The company has obtained a list from primary care physicians throughout the country of 3400 individuals who are known to have high cholesterol Design a sampling method to obtain the individuals in the sample Be sure to support the choice What sampling method s is are valid Select all that apply A Group the individuals by common primary care physician For each group assign all the individuals different numbers and use a random number table to select an appropriate number of individuals B Alphabetize the list of 3400 individuals by last name and select one of the first 170 individuals at random Starting from the selected individual read down the list and select every 170th individual C Group the individuals by common primary care physician Assign each physician a different number and use a random number table to select physicians until the total number of patients of all the selected physicians is at least 20 D Select a hospital at random from a list of all of the country s hospitals Survey individuals that pass by the front desk until there are responses from 20 individuals with high cholesterol

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