Although airline schedules and cost are important factors for business travelers when choosing an airline carrier, a USA Today survey found that business travelers list an airline’s frequent flier program as the most important factor. From a sample of 1875 business travelers who responded to the survey, 600 listed a frequent flier program as the most important factor. The 95% confidence interval estimate for the population proportion of business travelers who believe a frequent flier program is the most important factor when choosing an airline carrier is {.3, .34}. Does your confidence interval provide evidence that at least one third of business travelers believe a frequent flier program is the most important factor when choosing an airline carrier?