A survey for a certain year found that 90% of pregnant women received medical…
2023
A survey for a certain year found that 90% of pregnant women received medical care at least once before giving birth. Of these women, 60% received medical care from doctors, while 40% received medical care from other healthcare providers.
Given this information, which one of the following statements can be inferred with certainty?
- A.
More than half of the pregnant women received medical care at least once from a doctor.
- B.
Less than half of the pregnant women received medical care at least once from a doctor.
- C.
More than half of the pregnant women received medical care at most once from a doctor.
- D.
Less than half of the pregnant women received medical care at most once from a doctor.
Attempted by 117 students.
Show answer & explanation
Correct answer: A
Key calculation: 0.90 × 0.60 = 0.54, so 54% of all pregnant women received medical care from a doctor.
Conclusion:
Because 54% is greater than 50%, the statement that more than half of the pregnant women received medical care at least once from a doctor is certainly true.
Any statement claiming less than half received care from a doctor is contradicted by this calculation.
Statements mentioning "at most once" cannot be inferred because the data do not provide information about the number of visits, only whether care was received at least once and who provided it.