AsocialscientistwantedtoestimatetheproportionofschoolchildreninBostonwholivein a single-parentfamily.Shedecidedtouseasamplesizesuchthat,withprobability0.95,the error wouldnotexceed0.05.Howlargeasamplesizeshouldsheuse,ifshehasnoideaofthe size ofthatproportion?

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AsocialscientistwantedtoestimatetheproportionofschoolchildreninBostonwholivein a single-parentfamily.Shedecidedtouseasamplesizesuchthat,withprobability0.95,the error wouldnotexceed0.05.Howlargeasamplesizeshouldsheuse,ifshehasnoideaofthe size ofthatproportion?

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