Determining probability that bolt will be found defective

Reference no: EM1315627

Q1) Sample of 200 bolts, of this sample: 24 bolts are defective for workmanship, 34 bolts are defective due to size being too large, 158 bolts meet specifications.

a) If only one bolt is chosen, determine the probability that it will be found defective for only 1 reason (that is. it is either too large or has poor workmanship, but not both.)

b) If two bolts are chosen, find out the probability that both will be determined defective for only one reason (that is it is either too large or has poor workmanship, but not both.)

Q2) Outpatient clinic, patients are kept in observation in main recovery room for 90 minutes after surgery and then they care sent home or moved to secondary recovery room. In the meantime, if just-operated patient can't be moved to main recovery bed (as all beds in main recovery room are occupied), patient stays in surgical bed, hence blocking it and precluding other operations from taking place (which, of course, reduces revenue and annoy surgeon waiting to operate). Clinic has 4 surgical units. At peak time, average of six patients arrives per hour to main recovery room.

If main recovery room has capacity of twelve beds, determine the probability that surgical bed will be temporarily blocked?

Reference no: EM1315627

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