The vice president of operations at busch gardens knows


The vice president of operations at Busch Gardens knows that 70 percent of the patrons like roller-coaster rides.

He wishes to have an acceptable margin of error of no more than ± 2 percent and wants to be 95 percent confident about the attitudes toward the "Gwazi" roller coaster.

What sample size would be required for a personal interview study among on-site patrons?

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