QUESTION6 The quality assurance department at a hospital has as one of its respo
ID: 3304535 • Letter: Q
Question
QUESTION6 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 5 records to find the first incorrect record? ( Report ansiwer to three decimal places. Answer must be within+0.001 of correct value.) QUESTION7 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 there are exactly 5 incorrect records in the first 47 records checked?. (Report answer to three decimal places. Answer must be within 0.001 of correct value.) 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. What is the probability that there are exactly 3 incorrect records in the first 34 records checked?. (Report answer to three decimal places. Answer must be within + 0.001 of correct value.) QUESTION 9 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 084 probability of being correct. Suppose the employee begins checking medical records at some point in time Given that the 4th incorrect record is the 73th record checked, what is the probability that at least 6 of the first 99 records are incorrect? ( Report answer to three decimal places. Answer must be within +- 0.001 of correct value.) QUESTION 10 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 Given that the 4th incorrect record is the 67th record checked, on average, how many incorrect records will be found in the first 102 records checked? ( Report answer to three decimal places. Answer must be within +-0.001 of correct value.)Explanation / Answer
Question 6:
This is a case of a geometric progression. The probability that it required more than 5 records to find the first incorrect record is computed as:
= Probability that all the first 5 records are correct
= 0.84*0.84*0.84*0.84*0.84
= 0.845
= 0.418
Therefore 0.418 is the required probabililty here. ( rounded to 3 decimal places )