l\/Ionitor three Cl1storr1ers purchasing srnartphones at
Chapter 3, Problem 3.6(choose chapter or problem)
l\/Ionitor three Cl1storr1ers purchasing srnartphones at the Phonesrnart store and observe whetl1er each buys an Apricot phor1e for $450 or a Banana phone for $300. The ra.ndorn variable N is the nurnber of customers purchasing an Apricot phone. Assume N has PMF 0.4 T/, = 0 ' PN (n,) = 0.2 T/, = 1, 2, 3, (3.59) lO otherwise.M dollars is t11e arr1ol1nt of rr1oney paid by t hree custorr1ers. (a) Express Mas a fur1ction of l'l. (b) Fir1d P1w(rn) and E[M ].
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