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A traffic safety report indicated that for the 21-24 year age group, 31.58% of traffic fatalities were victims who had used a seat belt. Victims
A traffic safety report indicated that for the 21-24 year age group, 31.58% of traffic fatalities were victims who had used a seat belt. Victims who were not wearing a seat belt accounted for 59.83% of the deaths, and the status of the rest was unknown. A study of 120 traffic fatalities in a particular region showed that for this age group, 35 of the victims had used a seat belt, 78 had not, and the status of the rest was unknown. At alpha = 0.05 is there sufficient evidence that the proportions differ from those in the report?
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