Referring to Table 6-2, for a given month, what is the probability that John's income as a waiter is between $1,200 and $1,600
举一反三
- Referring to Table 6-2, for a given month, what is the probability that John's income as a waiter is between $700 and $1,600
- Referring to Table 5-1, the probability that both sound an alarm in the presence of smoke is ( ).(keep 2 decimal places)
- Referring to Table 5-1, the probability that neither sound an alarm in the presence of smoke is ________.
- Referring to Table 5-1, the probability that at least one sounds an alarm in the presence of smoke is ________.
- 分布1、分布2、分布3 的标准差分别为（ ）。回答下面的题目：假设三个损失分布如下表所示：分布1 分布2 分布3损失结果概率损失结果概率损失结果概率300 1/3 0 1/3 0 1/2400 1/3 600 1/3 600 1/3500 1/3 900 1/3 1200 1/6分布1、分布2、分布3 的期望损失分别为（ ）。 A: 100 (2 / 3) 、100 14 、200 5 B: 100 (2 / 3) 、100 (17 / 3) 、100 3 C: 100 3 、100 6、200 3 D: 100 6 、200 6 、200 3