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You are a travel agent and wish to estimate, with 98% confidence, the proportion of vacationers who use an online service or the internet to make travel reservations. Your estimate must be accurate within 4% of the population proportion.

(a) No preliminary estimate is available. Find the minimum sample size needed.

(b) Find the minimum sample size needed, using a prior study that found that 35% of the respondents said they used an online service or the Internet to make travel reservations.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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