What sample size is necessary

Reference no: EM13241088

Survey to determine what proportion of new car buyers continue to have their car serviced at the dealership after warranty ends. Estimates 30% of customer do so. Results should be accurate within 5%. Also 95% confident of the results. What sample size is necessary?

Reference no: EM13241088

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What sample size is necessary : Survey to determine what proportion of new car buyers continue to have their car serviced at the dealership after warranty ends. Estimates 30% of customer do so.

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