Mathematics, 15.11.2020 05:20 sammiehammer

To gather information about the accuracy of a new cholesterol test, a random sample of 20 hospitals was selected from the state. The new test was administered to every patient in the selected hospitals. What kind of sample is this? A)a cluster sample
B)a simple random sample
C)a stratified random sample
D)a systematic random sample
E)a voluntary response sample

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