Quesation Completion Status QUESTION S the quality assurance department at a hos

Question

Quesation Completion Status QUESTION S the quality assurance department at a hosptal has as one of its responsbdees the of medical records One of the departmenrs emplayees samples medical records and checks eecord has a 0M probateay of being corect Suppose the onleyee bees near medka mon a ion, pore n al data supgests that medea What in f the number et records checked e. find 27th inerreet record. QUESTION G esponutes the ertcation of medical econds One of the departments employs smpes eical reconds and checks What is the probablity that it requires checking more than 3 records to fnd the sincareect QUESTION department at of the deprtmets nON9

Explanation / Answer

6)

X = number of records to get first incorrect

X follow geometric distribution with p = 1-0.84 = 0.16

P(X> 3) = 0.592704

7)

Y = number of incorrect

Y follow binomial distribution with n = 29 (image is blurred , if not adjust the values} , p = 0.16

P(Y =k) = nCk *p^k * (1-p)^(n-k)

P(Y = 3 ) = 0.16083

8)

P(Y = 5)   {here n = 56 {again check it }

P(Y =k) = nCk * p^k * (1-p)^(n-k)

= 0.0550

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