A survey estimated that a doctor's average salary is R$ 7,000.00. The margin of error is R$ ± 1500. This means that:
A) The average salary of physicians is between R$ 5,500 and R$ 8,500
B) The confidence interval is 95%
C) The margin of error is R$ 1500.00
D) Z * is equal to 1.96
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