please answer b

An office machine costs $10,000 to replace unless a mysterious, hard-to-find problem can be found and fixed. Repair calls from any service technician cost $500 each, and $2,000 is available to get this machine fixed. A repair technician has a 26% chance of fixing it. Complete parts (a) through (c) below. . . . . . (a) Create a probability model for the number of visits needed to fix the machine or exhaust the budget of $2,000. (That is, there can be at most four visits.) p(X = 1) = 0.26 p(X = 2) = 0.1924 p(X = 3) = 0.1424 p(X = 4) = 0.1054 p(X 2 5) = 0.2998 (Round to four decimal places as needed.) (b) Find the expected number of service technicians that will be called in. The expected number of technicians is technicians . (Round to two decimal places as needed.)