Mark works for an organization committed to raising

14. Mark works for an organization committed to raising money for Alzheimers research.
From past experience, the organization knows that about 20% of all potential donors
will agree to give something if contacted by phone. They also know that of all people
donating, about 5% will give $100 or more. On average, how many potential donors
will he have to contact until she gets her first $100 donor or more.
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conditional distribution of X, given that X ≥ 1, is called a truncated Poisson
distribution
a. Find E(X|X ≥ 1)
b. Find Var(X|X ≥ 1).
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