7/12 - 1/6 in simplest form
1 answer:
You might be interested in
Answer:
Step-by-step explanation:
For each component, there are only two possible outcomes. Either it fails, or it does not. The components are independent. We want to know how many outcomes until r failures. The expected value is given by
In which r is the number of failures we want and p is the probability of a failure.
In this problem, we have that:
r = 1 because we want the first failed unit.
The expected number of systems inspected until the first failed unit is 2.5
Answer: B
Reason:
44 + x 66
x 22
Also when we have a greater and equal to sign (), it will be a filled in circle.
Thats why its by.