Question: an article in the journal of data science quota statistical...
An article in The Journal of Data Science ["A Statistical Analysis of Well Failures in Baltimore County" (2009, Vol. 7, pp. 111-127)] provided the following table of well failures for different geological formation groups in Baltimore County.
|Geological Formation Group||Failed||Total|
|Loch raven schist||443||3733|
Let A denote the event that the geological formation has more than 1000 wells, and let B denote the event that a well failed. Determine the number of wells in each of the following events.
(a) A and B
(c) A or B
(d) A or B'
(e) A' and B'