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? Round your answer to four decimal places (e.g. 98.7654). P =

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? Round your answer to four decimal places (e.g. 98.7654). P =

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

Consider the well failure data in the table below.
Wells
Geological Formation Group
Failed
Total
Gneiss
110
1685
Granite
2
28
Loch raven schist
503
3733
Mafic
14
363
Marble
29
309
Prettyboy schist
75
1403
Other schists
31
933
Serpentine
39
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?
Round your answer to four decimal places (e.g. 98.7654).
P =
(b) What is the probability that both are from the same geological formation group?
Round your answer to four decimal places (e.g. 98.7654).
P =

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