bulldog160
New member
- Joined
- Nov 15, 2017
- Messages
- 11
I'm really getting baffled with this question that has taken me far too long to complete and would love some guidance.
An accident caused the catastrophic failure of metal pipes in a factory. There were
six metal pipes in the garage at any given time.
Table 1 shows the numbers of metal pipe failures that had occurred on
each of the 23 previous inspections.
Table 1 Number of metal pipe failures
Number of failed metal pipes 0 1 2 3 4 5 6
Number of inspections------16 5 2 0 0 0 0
(i) Let p be the probability that a pipe fails on an inspection. What
distribution is appropriate to describe the failure or non-failure of a
particular metal pipe on a particular inspection?
For this I have said that this is a Bernoulli Distribution due to only two possible outcomes of failure and non-failure.
(ii) A reasonable estimate of p is 3/46 or 0.065. Explain where this number comes from.
This is where I am getting stuck on. I cannot work out what p is using the information they have provided.
Many thanks for your help.
An accident caused the catastrophic failure of metal pipes in a factory. There were
six metal pipes in the garage at any given time.
Table 1 shows the numbers of metal pipe failures that had occurred on
each of the 23 previous inspections.
Table 1 Number of metal pipe failures
Number of failed metal pipes 0 1 2 3 4 5 6
Number of inspections------16 5 2 0 0 0 0
(i) Let p be the probability that a pipe fails on an inspection. What
distribution is appropriate to describe the failure or non-failure of a
particular metal pipe on a particular inspection?
For this I have said that this is a Bernoulli Distribution due to only two possible outcomes of failure and non-failure.
(ii) A reasonable estimate of p is 3/46 or 0.065. Explain where this number comes from.
This is where I am getting stuck on. I cannot work out what p is using the information they have provided.
Many thanks for your help.