A hotel sells rooms at either a full or discount of price. All rooms can be sold at the discount price. The hotel has computed a critical fraction = 25. It has also constructed a table below showing probabilities of selling different numbers of rooms at full price. Based on this data, how many rooms should be protected for sale at full price? # Rooms Sold at Probabilit Cumulative Full Price y Probability 0 0.06 0.06 1 0.07 0.13 2 0.18 0.31 3 0.20 0.51 4 0.26 0.77 7 569 0.15 0.92 0.06 0.98 0.02 1.00