The quality assurance department at a hospital has as one of its responsibilitie
ID: 3306674 • Letter: T
Question
The quality assurance department at a hospital has as one of its responsibilities the verification of medical records. One of the department’s employees samples medical records and checks each one for correctness. Historical data suggests that each medical record has a 0.84 probability of being correct. Suppose the employee begins checking medical records at some point in time.
QUESTION 4 The quality assurance department at a hospital has as one of its responsibilities the verification of medical records. One of the department's employees samples medical records and checks each one for correctness. Historical data suggests that each medical record has a 0.84 probability of being correct. Suppose the employee begins checking medical records at some point in time. What is the probability that it requires checking more than 4 records to find the first incorrect record? ( Report answer to three decimal places. Answer must be within +-0.001 of correct value.)Explanation / Answer
Probability that it requires checking more than 4 records to find the first incorrect record is computed as:
= Probability that the first 4 records are correct
= 0.84*0.84*0.84*0.84
= 0.844
= 0.498
Therefore 0.498 is the required probability here. ( rounded to 3 decimal places )
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