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An insurance company is interested in conducting a study to estimate the population proportion of teenagers who obtain a driving permit within one year of their 16th birthdays. A level of confidence of 99% will be used and an error of no more than .04 is desired. There is no knowledge as to what the population proportion will be. The sample size should be at least t6th birthdays. A level ofortion will be. The O 1036 O 160 0 41 O 259 O 289

math   Statistics-And-Probability   
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Answer #1

When proportion is not estimated then p = 0.50

Sample size = Z2 * p(1-p) / E2

= 2.57582 * 0.50 * 0.50 / 0.042

= 1336

Sample size = 1336

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