a dentist conducts a survey to find out about...
a dentist conducts a survey to find out about the dental hygiene habits of her patients. which of the following is the most effective random sampling method for this survey study? a using patients last names to pick one patient with a last name that starts with each letter of the alphabet b using patients id numbers to randomly select 50 patients and contacting them to fill out the survey c asking 50 patients to fill out the survey and receive a 5% discount d asking the first 50 patients who visit the office to fill out the survey
Answer
# Brief Explanations:
- Option A may introduce bias as last - name distribution isn't always random.
- Option C may attract only patients interested in the discount, introducing bias.
- Option D is a convenience sample and may not represent all patients.
- Option B uses patient ID numbers for random selection, which is a more effective random sampling method as it gives each patient an equal chance of being selected.
# Answer:
B. Using patients’ ID numbers to randomly select 50 patients and contacting them to fill out the survey