In a random sample of 300 persons eating lunch at a


In a random sample of 300 persons eating lunch at a department store cafeteria, only 102 had dessert. If we use 102/300 = 0.34 as an estimate of the corresponding true proportion, with what confidence can we assert that our error is less than 0.05?

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Basic Statistics: In a random sample of 300 persons eating lunch at a
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