A recent study indicated that 44% of the 89 women over age 55 in the...
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A recent study indicated that 44% of the 89 women over age 55 in the study were widows. Round up your answers to the next whole number for the following questions.How large a sample must you take to be 90% confident that the estimate is within 0.05 of the true proportion of women over age 55 who are widows?
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