总体分布正态，总体方差[tex=1.0x1.214]+33urkkz3/Nyr4sGrqM3/w==[/tex]已知，从总体中随即抽取容量为[tex=1.0x1.286]0MzHtCQbgnSzLwp5O36txg==[/tex]的小样本。用样本平均数估计总体平均数的置信区间为( )。
未知类型：{'options': ['[tex=16.429x2.429]NGVugV9+AEk3oU1SP4svOEnECjOfa5wuRy6CQxazRYM8WvGhMu6P3tNQq0vKDq/A+H/Y8/zVjc0Qct92MEHEUmUKrE5ytOk9/t8irypV98X1SpmMrLAJJ+pf8K1qazHMv0DSt+Pb6ktcS6JbrcmOTA==[/tex]', '[tex=15.714x2.429]ib9fAZyhfZrrKokwAkpDXYuYcqmy5Gn0p/aw1U1MndCPxYEnDuyCpdLzmTYjTSUmMg/dWkMzutY7vWFcZGMYtlo471SUiCbcWyvclesXprSivb7B8EGTp9X+7YOWP52O[/tex]', '[tex=13.786x2.429]NGVugV9+AEk3oU1SP4svOEnECjOfa5wuRy6CQxazRYPJLvYcNjmkq0bdBXh2UUDCEnk9jDB0qv20HZFfUsm8qFKy9OTTvy8a6QxNhHRe87juVT2evJbrUhN6Yll8iCbN[/tex]', '[tex=13.214x2.429]FAiqofCwiUaPO7pG6z2KugJY0bbWs0yI9/LWkSmka/2QnZ/WKrL3hlP+re5XNVEfGD7TmD020d9OsaBz7Q7aPDneV0JeG3a+r/Zuoh9rOcnoAyvKnTaVopQZi7lX6xr7[/tex]'], 'type': 102}
未知类型：{'options': ['[tex=16.429x2.429]NGVugV9+AEk3oU1SP4svOEnECjOfa5wuRy6CQxazRYM8WvGhMu6P3tNQq0vKDq/A+H/Y8/zVjc0Qct92MEHEUmUKrE5ytOk9/t8irypV98X1SpmMrLAJJ+pf8K1qazHMv0DSt+Pb6ktcS6JbrcmOTA==[/tex]', '[tex=15.714x2.429]ib9fAZyhfZrrKokwAkpDXYuYcqmy5Gn0p/aw1U1MndCPxYEnDuyCpdLzmTYjTSUmMg/dWkMzutY7vWFcZGMYtlo471SUiCbcWyvclesXprSivb7B8EGTp9X+7YOWP52O[/tex]', '[tex=13.786x2.429]NGVugV9+AEk3oU1SP4svOEnECjOfa5wuRy6CQxazRYPJLvYcNjmkq0bdBXh2UUDCEnk9jDB0qv20HZFfUsm8qFKy9OTTvy8a6QxNhHRe87juVT2evJbrUhN6Yll8iCbN[/tex]', '[tex=13.214x2.429]FAiqofCwiUaPO7pG6z2KugJY0bbWs0yI9/LWkSmka/2QnZ/WKrL3hlP+re5XNVEfGD7TmD020d9OsaBz7Q7aPDneV0JeG3a+r/Zuoh9rOcnoAyvKnTaVopQZi7lX6xr7[/tex]'], 'type': 102}
举一反三
- >>>x= [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9]>>>print(x.sort()) 语句运行结果正确的是( )。 A: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] B: [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9] C: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0] D: ['2', '4', '0', '6', '10', '7', '8', '3', '9', '1', '5']
- set1 = {x for x in range(10)} print(set1) 以上代码的运行结果为？ A: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} B: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10} C: {1, 2, 3, 4, 5, 6, 7, 8, 9} D: {1, 2, 3, 4, 5, 6, 7, 8, 9,10}
- 输出九九乘法表。 1 2 3 4 5 6 7 8 9 --------------------------------------------------------------------- 1*1=1 2*1=2 2*2=4 3*1=3 3*2=6 3*3=9 4*1=4 4*2=8 4*3=12 4*4=16 5*1=5 5*2=10 5*3=15 5*4=20 5*5=25 6*1=6 6*2=12 6*3=18 6*4=24 6*5=30 6*6=36 7*1=7 7*2=14 7*3=21 7*4=28 7*5=35 7*6=42 7*7=49 8*1=8 8*2=16 8*3=24 8*4=32 8*5=40 8*6=48 8*7=56 8*8=64 9*1=9 9*2=18 9*3=27 9*4=36 9*5=45 9*6=54 9*7=63 9*8=72 9*9=81
- 【单选题】请用地点定桩法在4分钟内记忆数字。 4 0 1 3 6 3 5 1 9 8 8 9 7 2 9 3 0 9 5 3 1 7 7 5 2 3 3 0 5 0 1 4 1 3 8 3 5 7 9 7 (5.0分) A. 已背 B. 未背
- 下面语句的输出结果是？range(len('HelloWorld')) A: [1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11] B: 11 C: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] D: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]