QUESTION 1 The quality assurance department at a hospital has as one of its resp

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QUESTION 1 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 the 3rd incorrect record is the 6th record checked? (Report answer to three decimal places. Answer must be within 0.001 of correct value.) QUESTION 2 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 the 5th incorrect record is the 12th record checked? (Report answer to three decimal places. Answer must be within + 0.001 of correct value.) QUESTION 3 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. On average, how many records will have been checked when the first incorrect record is found? Report answer to three dec mal places. Answer must be within 0.001 of correct value. 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 Given that the 5th incorrect record is the 107th record checked, what is the expected number of records checked until the 11th incorrect record is found? ( Report ansiver to three decimal places. Answer must be within +/ 0.001 of correct value.) QUESTION5 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 standard deviation of the number of records checked to find the 25th incorrect record. (Report answer to three decimal places. Answer must be within t/- 0.001 of correct value

Explanation / Answer

1. Here probability of correct is 0.84, so probability of incorrect is 0.16. This is binomial distribution as n is constant, p only to values, events are independent and only two outcomes

For n=6, P(x=3)=0.0486

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