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The proportion of public accountants who have changed companies within the last three years is to...

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Basic Math

The proportion of public accountants who have changed companieswithin the last three years is to be estimated within 4%. The 95%level of confidence is to be used. A study conducted several yearsago revealed that the percent of public accountants changingcompanies within three years was 21. (Use z Distribution Table.)(Round the z-values to 2 decimal places. Round up youranswers to the next whole number.)

a.To update this study, the files of how many public accountantsshould be studied?
b.

How many public accountants should be contacted if no previousestimates of the population proportion are available?

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Solution Given thata 21 0211 1 021 079margin of    See Answer
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