A discrete random variable x can take on the values 1,2,3,4, or 5. The probability function is Prob (x) = x/15, so the cumulative distribution function is. The cumulative probability, F (4), and P (2 < x ≤ 5) are:
　　　F (4)　　　　P (2 < x ≤ 5)

[单选题]For a continuous random variable X, the probability of any single value of

[单选题]Which of the following is least likely an example of a discrete random vari

[单选题]Which of the following isleast likelycorrect concerning a random variable t

[单选题]The probability that a normally distributed random variable will be more th

[单选题]For a binomial random variable with a 40% probability of success on each tr

[单选题]Which of the following most accurately describes how to standardize a rando

[单选题]Which of the following most accurately describes how to standardize a rando

[问答题]设向量组α1=（1，2，3，4），α2=（2，3，4，5，），α3=（3，4，5，6），α4=（4，5，6，7），则秩（α1，α2，α3，α4）=--

[问答题]设向量组α1=（1，2，3，4），α2=（2，3，4，5，），α3=（3，4，5，6），α4=（4，5，6，7），则秩（α1，α2，α3，α4）=--

[问答题]设向量组α1=（1，2，3，4），α2=（2，3，4，5，），α3=（3，4，5，6），α4=（4，5，6，7），则秩（α1，α2，α3，α4）=--