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Thewallstreetjournalreportedonseveralstudiesthatshowmassagetherapyhasavarietyofhealthbenefitsanditisnottooexpensive.Asampleof10typicalone-hourmassagetherapysessionsshowedanaveragechargeof$59.Thesamplestandarddeviationforonehoursessionisstandarddeviationof $5.05.A.Whatassumptionsaboutthepopulationshouldwebewillingtomakeifamarginoferrorisdesired?B.Using95%confidence,whatisthemarginoferror?C.Using99%confident,whatisthemarginoferror?

Thewallstreetjournalreportedonseveralstudiesthatshowmassagetherapyhasavarietyofhealthbenefitsanditisnottooexpensive.Asampleof10typicalone-hourmassagetherapysessionsshowedanaveragechargeof$59.Thesamplestandarddeviationforonehoursessionisstandarddeviationof $5.05.A.Whatassumptionsaboutthepopulationshouldwebewillingtomakeifamarginoferrorisdesired?B.Using95%confidence,whatisthemarginoferror?C.Using99%confident,whatisthemarginoferror?

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