Confidence interval for proportion

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Proportion Problem. Each year Delta Dental does a survey of parents concerning the tradition of the Tooth Fairy. A random sample of 1,058 parents were asked about how much money they leave for a tooth and questions concerning how their child responded to the concept of the Tooth Fairy. In one question, 508 parents indicated that their child saved the money they got for their tooth.

You are asked to calculate a 99% Confidence Interval for this proportion.

What is the z-value you will use in this Confidence Interval? Use 3 decimal places for your answer and use the proper rules of rounding.

Reference no: EM132399691

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