The probability that a wildcat well will be productive is 1/12. Assume that a group is drilling wells in various parts of the country so that the status of one well has no bearing on that of any other (independent). Let X denote the number of wells drilled to obtain the first strike.
a. Identify the appropriate distribution that describes X.
b. What is the probability that exactly three wells will be drilled before getting a strike?
c. What is the variance in number of wells drilled before getting a strike? d. What is the probability that two or more wells will be drilled before getting a strike?