Question: Please help.. Wldows A recent study indicated that 26% of the 171 women over age 55 in the study were widows. Round up your answers

Please help..

Wldows A recent study indicated that 26% of the 171 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% condent that the estimate is within 0.02 of the true proportion of women over age 55 who are widows

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