余3码(01101000.00110101)对应的十进制数为( ) A: 68.35 B: 35.02 C: 64.35 D: 97.35

随机抽取36个样本，已知标准差12，样本平均数98，求母体平均数99%的双尾信赖区间（） A: 94.08to101.92 B: 92.85to103.15 C: 97.35to98.65 D: 93.34to102.66

A portfolio manager is considering the purchase of a bond with a 5.5% coupon rate that pays interest annually and matures in three years. If the required rate of return on the bond is 5%, the price of A: 98.65 B: 101.36 C: 106

随机抽取64人的一个样本，发现有90%的服装网购者为女性。网购服装者中，女性所占比例95%的置信区间为 A: [ 82.65%， 97.35% ] B: [ 83.85%, 96.15% ] C: [ 84.12%，85.88% ] D: [ 85.6%， 95.4% ]