In a recent survey, 72% of post-secondary graduates indicated that they expected to earn at least $6000/month by the time they were ready to retire. The survey is considered accurate within ±5.2%, 19 times in 20. If the graduating class that participated in this survey contained 2100 students, what is the lower and upper estimate of the number of students who expect to earn at least $600/month by the time they are ready to retire? Select one: О а. 1403 to 1621 19 to 20

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