to crash. Instead, it will reduce the number of requests that can be satisfied at any one time. (a) If a company has 10,000 computers, each with a MTTF of 35 days, and it experiences catas trophic failure only if 1/3 of the computers fail, what is the MTTF for the system? (Assume that computers are not repaired.) (b) If it costs an extra $1000, per computer, to double the MTTF, would this be a good business decision? Show your work. (c) Figure 1.3 in the texthook shows, on average, the cost of downtimes. equal at all times of the year. For retailers, however, the Christmas season is the most profitable (and therefore the most costly time to lose sales). If a catalog sales center has twice as much traffic in the fourth quarter as every other quarter, what is the average cost of downtime per hour during the fourth quarter and the rest of the year