更多"If two events are independent, the "的相关试题:
[单项选择]If X and Y are independent events, which of the following must be TRUE（）
A. P( X or Y)=P(X)+P(Y).
B. X and Y cannot occur together.
C. P(X
[单项选择]The probability of each of three independent events is shown in the table below. What is the probability of A and C occurring, but not B（）
A. 15%
B. 42%
C. 8.9%.
[单项选择]The experiments of two groups of rats indicate that ______.
[单项选择]Two events have highlighted the tensions in recent years.
A. extended
B. emphasized
C. distorted
D. illustrated
[单项选择]The two small independent countries entered into ______ with each other and they felt less afraid of their powerful neighbor.
A. combination
B. alliance
C. cooperation
D. coordination
[单项选择]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.
[单项选择]If two events can not both occur in a single trial, they are ______ .
A. false events
B. mutually exclusive
C. statistically independent
D. just in time
[单项选择]Let A and B be two mutually exclusive events with P(A) =0.40 and P(B)=0.20. Therefore :（）
A. P(B
B. P(A and B)=0.
C. P(A or B)=0.52.
[多项选择]What are two functions that WLAN management provides？ （）
A. enhances security
B. system tests
C. accommodates additional routers
D. simplifies daily operations
E. uses standalone access points
[单项选择]Two events have {{U}}highlighted{{/U}} the tensions in recent years.
A. extended
B. emphasized
C. distorted
D. illustrated
[单项选择]The probability of A is 0.4. The probability of AC is 0.6. The probability of (B|A) is 0.5, and the probability of ( B| AC) is 0.2. Using Bayes' formula, what is the probability of ( A|B)（）
A. 0.625.
B. 0.875.
C. 0.125.
[单项选择]A probability function:（）
A. only applies to continuous distributions.
B. specifies the probability that the random variable takes on a specific value.
C. is often referred to as the "cdf. "
[单项选择]For an unconditional probability（）
A. there are at least two events.
B. the joint probability rule is important.
C. there is only one random variable of concern.
[单项选择]Telecommuting is less environmentally friendly than office-based work.
[单项选择]Use the following probability distribution to calculate the expected return for the portfolio.（）
A. 2.5%
B. 6.6%
C. 4.3%
[单项选择]After preparing the probability distribution of cost outcome for a project, the estimate, with a 15% probability of being exceeded, is approximately one standard deviation （）.
A. below the mean
B. above the median
C. above the mean
D. above the median
