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Everyday Dana attempts to telephone Carla once, and each time she telephones the probability is $$\frac{1}{3}$$ that she will get a busy signal. Whether Dana gets a busy signal on any attempt is independent of whether she gets a busy signal on any other attempt.
Quantity A
The probability that Dana will not get a busy signal in each of 4 different attempts to telephone Carla
Quantity B
$$\frac{1}{4}$$
B显示答案
· 相关考点
6.4.3 独立事件
6.4.3 独立事件
以上解析由 考满分老师提供。
