According to a study by the Pew Research Center, 75% of adults 18–30 said they went online daily, compared with 40% of those 65–74, and just 16% for those 75 or older. Using the 0.01 level of significance, and assuming that a random sample of 200 persons was surveyed from each age group, could the population proportions be equal for those who say they go online daily from the three groups?
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