A DOCTOR wants to know how well elderly patients remember to take their medicine. The doctor measures the percentage of time during the week patients remembered to take their medicine. For a sample of 10 patients, the sample mean percentage was 75 and the sample varience was 15. If the doctor could test his/her entire patient popuation, what would he/she expect the population varience to be?
Answer: population variance = n/(n-1) sample variance = (10/9)*15 = 16.67
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