For the most recent year reported, the Federal Bureau of Investigation has listed the following data for robberies in the United States.
The police chief in a medium-sized community has data indicating that the respective numbers of these robberies in his community during the same year were 23, 9, 7, and 11. At the 0.05 level, can the distribution of robberies in this community be considered as having differed significantly from that experienced by the United States as a whole?
Answer to relevant QuestionsThe following data are the number of persons who were waiting in line at a checkout counter at 100 randomly selected times during the week. At the 0.05 level, test whether the population of these values could be Poisson ...Twenty-five percent of the employees of a large firm have been with the firm less than 10 years, 40% have been with the firm for 10 to 20 years, and 35% have been with the firm for more than 20 years. Management claims to ...Over the past year, an audio store has sold stereo systems produced by three different manufacturers. Of the 400 units from company A, 12% were returned for service during the warranty period. This compares to 15% of 300 ...For a random sample of households in a county, file XR13085 lists the number of TV sets owned by each of the households in the study. Using the 0.025 level of significance, test whether x = the number of television sets per ...The median age for a male at the time of his first marriage has been reported as 27.5 years. In a given region, a random sample of males’ first marriages showed the ages listed in data file XR14011. Using the 0.05 level of ...
Post your question