HW 7 (1) [Compatibility Mode] a- Search in Document Home Insert Design Layout Re
ID: 2935556 • Letter: H
Question
HW 7 (1) [Compatibility Mode] a- Search in Document Home Insert Design Layout References Mailings Review View Share AaBbCcDd AaBbCcDc AaBbCcDdEe Paste B I Heading1Hesding 2 Title Styles ane Sublite An oil company conducts a geological study that indicates that an exploratory oil well should have a 20% chance of striking oil. a) What is the probability that the first strike comes on the third well drilled? b) What is the probability that the third strike comes on the seventh well drilled? Page 1 of 1 52 Words English (US Focus 150%Explanation / Answer
p = 0.2
a) P(first strike on third well drilled) = (1 - p)2 * p = 0.82 * 0.2 = 0.128
b) P(3rd strike on seventh well) = 6C2 * 0.22 * 0.84 * 0.2 = 0.049
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