If the project completion time is normally distributed and the due date for the project is greater than the expected completion time, then the probability that the project will be finished by the due date is A: a. less than 0.50. B: b. greater than 0.50. C: c. equal to 0.50. D: d. undeterminable without more information.
If the project completion time is normally distributed and the due date for the project is greater than the expected completion time, then the probability that the project will be finished by the due date is A: a. less than 0.50. B: b. greater than 0.50. C: c. equal to 0.50. D: d. undeterminable without more information.
Using the standard normal curve, the area between z = 0 and z = 3.50 is about 0.50.
Using the standard normal curve, the area between z = 0 and z = 3.50 is about 0.50.
If two events are mutually exclusive, the probability that they both will occur at the same time is :() A: 0.50. B: 1.00. C: 0.00.
If two events are mutually exclusive, the probability that they both will occur at the same time is :() A: 0.50. B: 1.00. C: 0.00.
BCC正常值为() A: -0.25~+0.50 B: -0.25~-0.50 C: +0.25~+0.75 D: -0.50~+0.25
BCC正常值为() A: -0.25~+0.50 B: -0.25~-0.50 C: +0.25~+0.75 D: -0.50~+0.25
血细胞比容的正常范围是() A: 男0.50~0.60,女0.40~0.50 B: 男0.30~0.50,女0.25~0.40 C: 男0.40~0.50,女0.37~0.48 D: 男0.60~0.70,女0.45~0.50
血细胞比容的正常范围是() A: 男0.50~0.60,女0.40~0.50 B: 男0.30~0.50,女0.25~0.40 C: 男0.40~0.50,女0.37~0.48 D: 男0.60~0.70,女0.45~0.50
下列各组溶液用半透膜隔开时,渗透方向从左至右的一组是( ) A: 0.50 mol·L-1Na2SO4和0.50<br/>mol·L-1CaCl2 B: 0.50 mol·L-1NaCl和0.50<br/>mol·L-1<br/>CaCl2 C: 0.50 mol·L-1<br/>BaCl2和0.50<br/>mol·L-1KCl D: 0.50 mol·L-1NaCl和1.0<br/>mol·L-1葡萄糖
下列各组溶液用半透膜隔开时,渗透方向从左至右的一组是( ) A: 0.50 mol·L-1Na2SO4和0.50<br/>mol·L-1CaCl2 B: 0.50 mol·L-1NaCl和0.50<br/>mol·L-1<br/>CaCl2 C: 0.50 mol·L-1<br/>BaCl2和0.50<br/>mol·L-1KCl D: 0.50 mol·L-1NaCl和1.0<br/>mol·L-1葡萄糖
随机抽取上海市区120名男孩作为样本,测得其平均出生体重为3.20Kg,标准差0.50 Kg。则总体均数95%可信区间的公式是()。 A: A3.20±1.96×0.50 B: B3.20±1.96×0.50/√120 C: C3.20±2.58×0.50 D: D3.20±2.58×0.50/√120
随机抽取上海市区120名男孩作为样本,测得其平均出生体重为3.20Kg,标准差0.50 Kg。则总体均数95%可信区间的公式是()。 A: A3.20±1.96×0.50 B: B3.20±1.96×0.50/√120 C: C3.20±2.58×0.50 D: D3.20±2.58×0.50/√120
随机抽取上海市区120名男孩作为样本,测得其平均出生体重为3.20Kg,标准差0.50 Kg。则总体均数95%可信区间的公式是()。 A: 3.20±1.96×0.50 B: 3.20±1.96×0.50/√120 C: 3.20±2.58×0.50 D: 3.20±2.58×0.50/√120
随机抽取上海市区120名男孩作为样本,测得其平均出生体重为3.20Kg,标准差0.50 Kg。则总体均数95%可信区间的公式是()。 A: 3.20±1.96×0.50 B: 3.20±1.96×0.50/√120 C: 3.20±2.58×0.50 D: 3.20±2.58×0.50/√120
于遗传平衡状态的群体是() A: AA:0.20;Aa:0.60;aa:0.20 B: AA:0.25;Aa:0.50;aa:0.25 C: AA:0.50;Aa:0;aa:0.50 D: AA:0.30;Aa:0.50;aa:0.20
于遗传平衡状态的群体是() A: AA:0.20;Aa:0.60;aa:0.20 B: AA:0.25;Aa:0.50;aa:0.25 C: AA:0.50;Aa:0;aa:0.50 D: AA:0.30;Aa:0.50;aa:0.20
【单选题】The probability that a continuous random variable X will assume any specific value is: A. 0.0. B. 1.0. C. 0.50. D. any value between -0.5 and 0.5.
【单选题】The probability that a continuous random variable X will assume any specific value is: A. 0.0. B. 1.0. C. 0.50. D. any value between -0.5 and 0.5.