• 2022-06-07
    从一批钢管抽取 10 根,测得其内径(单位: mm )为:[tex=36.071x1.357]CeOWlpLvH8Qhk/RmfIvBHdB7Bp4Tk8WZiIH1q5Zg637IDCpa7BpLvoHol3HUGfH+u0UGG4PipemNtFUGGwcbSZZjZOIBJCE4BMppokANK6b+fCFqT3B4FWerXLQbwxjhikWYleqqCD49/iSA96YXLt/k0pk5BVzJUUrG4EyotLI=[/tex]设这批钢管内直径服从正态分布 [tex=3.786x1.571]KMSpdLUrzTZbo8d74HAk8FbVxg68gpb5/5ajUKF2VF8=[/tex], 试分别在下列条件下检验假设 [tex=15.857x1.357]+2DkgTkYJZ5wHA39Hnm8+iV42rxWHcKIytQHqa9IFsel+T9eCo05IbUzb/ROV5QtmVe3cY6ciHzurvXqSGFZCg==[/tex][tex=0.571x0.786]G/buLKOLYVDEKMZ76t752w==[/tex] 未知.