1. Suppose that a discrete random variable X takes on four values: 0, 1, 2 and 3

Question

1. Suppose that a discrete random variable X takes on four values: 0, 1, 2 and 3 with the following possible probabilities for some of the values: p(0) = 0.3, p(2) = 0.30, p(3) = 0.15.

Then what is p(1) given by?

2. A Travel group consists of 6 women and four men. A random sample of two members is selected at random for a trip to Paris. Let X - # of women who win the trip to Paris.

Then X is NOT a binomial random variable because?

A. The probability of success changes from one trial to the next

B. Each trial results in exactly one of two possible outcomes

C. None of the Above.

D. The number of trials is fixed

PLEASE ANSWER ASAP DUE IN 2 HOURS

Explanation / Answer

Answer:

1. Suppose that a discrete random variable X takes on four values: 0, 1, 2 and 3 with the following possible probabilities for some of the values: p(0) = 0.3, p(2) = 0.30, p(3) = 0.15.

Then what is p(1) given by?

P(1) = 1-(0.3+0.3+0.15)

=0.25

2. A Travel group consists of 6 women and four men. A random sample of two members is selected at random for a trip to Paris. Let X - # of women who win the trip to Paris.

Then X is NOT a binomial random variable because?

Answer: A. The probability of success changes from one trial to the next

B. Each trial results in exactly one of two possible outcomes

C. None of the Above.

D. The number of trials is fixed

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