2. The RFS Electronics selis iphones for Apple Inc. RFS usually sells the number of iphones on Sunday. The store manager established the following probability distribution for the number of Iphones the store expects to sell on a particular Sunday. No. of Iphones (x) 0 1 2 3 4 5 Probability P(x) 0.05 0.10 0.12 0.15 0.18 0.40