A potential sponsor would like to know whether local viewers prefer some evening news programs over others. The sponsor conducts a viewer preference survey based on a simple random sample of 260 households. The results are: 54 preferred KTVO, 49 preferred KMDT, 68 preferred KLPF, and 89 preferred KZTV. A goodness-of-fit test performed on these data would yield a calculated/obtained chi-square value of ______:
