Answer Happy

In die vervaardiging van resistors is weerstand 'n belangrike veranderlike om te bestudeer, aangesien die varieerbaarheid daarvan dui op die stabiliteit van die vervaardigingsproses. Gestel die standaardafwyking in 'n steekproef van 15 resistors is 0.5 ohm. Beraam, die werklike variansie van die weerstand metings, deur 'n 90% vertrouensinterval te bereken. Kies die foutiewe bewering: In producing resistors, variability of the resistances is an important quantity to study, as it reflects upon the stability of the manufacturing process. Estimate, the true variance of the resistance measurements in a 90% , confidence interval, if a sample of 15 resistors showed resistances with a standard deviation of 0.5 ohm. Choose the incorrect statement: ОА. Xổ.05,14 = 23.68 xə.95.14 = 6.57 B. 0.1662 so C. 'n 90% onderste vertrouensgrens vir o is 0.1662 so A 90% lower confidence bound for gis 0.1478 502 50.5327 0.3844 SO < 0.7299 E.