A recent study indicated that 22% of the 173 women over age 55 in the study were widows. Round up your answers to the next whole number for the following questions. question: How large a sample must...

A recent study indicated that 22% of the 173 women over age 55 in the study were widows. Round up your answers to the next whole number for the following questions.

question:

How large a sample must you take to be 99% confident that the estimate is within 0.05 of the true proportion of women over age 55 who are widows?

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