Problem 6-27 A project manager is creating the design for a new engine. He judges that there will be a 50-50 chance that it will have high-energy (H) consumption instead of low (L). Historically, 15% of all high-energy engines have been approved (A) with the rest disapproved (D), while 25% of all low-energy engines have been approved. What is the probability that his design will result in an approved engine

Exercise: counting committees 0.0/2.0 puntos (calificable) we start with a pool of n people. a chaired committee consists of k≥1 members, out of whom one member is designated as the chairperson. the expression k(nk) can be interpreted as the number of possible chaired committees with k members. this is because we have (nk) choices for the k members, and once the members are chosen, there are then k choices for the chairperson. thus, c=∑k=1nk(nk) is the total number of possible chaired committees of any size. find the value of c (as a function of n ) by thinking about a different way of forming a chaired committee: first choose the chairperson, then choose the other members of the committee. the answer is of the form c=(α+nβ)2γn+δ. what are the values of α , β , γ , and δ ?