It is estimated that 780,000 surgical site infections (SSIs) occur each year.SSIs are the second most common type of healthcare-associated infections in U.S.hospitals and account for an extra $3.5 to $10 billion in healthcare costs per year.The national SSIs rate is 1.9%.A Georgetown medical office was interested in determining if their SSI rate were smaller than the national average.Out of a sample of 277 patients in their study,only one infection occurred.What is the approximate distribution of
?

A) Normal
B) Uniform
C) T
D) F

Question

It is estimated that 780,000 surgical site infections (SSIs) occur each year.SSIs are the second most common type of healthcare-associated infections in U.S.hospitals and account for an extra $3.5 to $10 billion in healthcare costs per year.The national SSIs rate is 1.9%.A Georgetown medical office was interested in determining if their SSI rate were smaller than the national average.Out of a sample of 277 patients in their study,only one infection occurred.What is the approximate distribution of

?

A) Normal
B) Uniform
C) T
D) F

Yi?it Yalç?nta? · Accepted Answer

Final Answer : A, Explanation :  Since the sample size is large (277 > 30), the central limit theorem applies, and the distribution of the sample proportion (SSI rate) can be approximated by a normal distribution.

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