Solution Found!
Consider the well failure data in Exercise 2-53. Suppose
Chapter 2, Problem 136E(choose chapter or problem)
Consider the well failure data in Exercise 2-53. Suppose that two failed wells are selected randomly (without replacement) for a follow-up review.
(a) What is the probability that both are from the gneiss geological formation group?
(b) What is the probability that both are from the same geological formation group?
Questions & Answers
QUESTION:
Consider the well failure data in Exercise 2-53. Suppose that two failed wells are selected randomly (without replacement) for a follow-up review.
(a) What is the probability that both are from the gneiss geological formation group?
(b) What is the probability that both are from the same geological formation group?
ANSWER:
Solution
Step 1 of 2
Let A denote the event that the geological formation has more than 1000 wells
Let B be the event that the well be failed
Suppose 2 failed wells are selected randomly without replacement
a) We have to find the probability of both are from genie geological formation group
From the given data the genie geological formation group has 170 wells out of that we are drawing 2 wells