On leitud, et juhuslikult võetud 100 detaili hulgast on 6 praaki. Olgu selles va...
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On leitud, et juhuslikult võetud 100 detaili hulgast on 6 praaki. Olgu selles valimis , kui tegemist pole praagiga ja , kui on praak. Leida valimi standardhälve .
Vastus esitada kolme komakoha täpsusega.
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