Question: Consider the well failure data given below. (a) What is the probability of a failure given there are more than 1,000 wells in a geological

Consider the well failure data given below.

(a) What is the probability of a failure given there are more than 1,000 wells in a geological formation?

(b) What is the probability of a failure given there are fewer than 500 wells in a geological formation?

Wells Geological Formation Group Failed Total Gneiss 170 1685 Granite 28 Loch raven schist 443 3733 Mafic 14 363 Marble

Wells Geological Formation Group Failed Total Gneiss 170 1685 Granite 28 Loch raven schist 443 3733 Mafic 14 363 Marble 29 309 Prettyboy schist 1403 60 933 Other schists 46 Serpentine 3 39

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