Question

Which of the following is a valid probability distribution? Please help me i cant get this one right

Answer 1

Answer:

Probability D

Step-by-step explanation:

The probability distribution should be 1

Probability A

Add the probabilities

.2+.2+.2+.2+.2+.2 = 1.2  >1  cannot happen

Probability B

Add the probabilities

.1+.2+.3+.3+.2+.1 = 1.2  >1  cannot happen

Probability C

Add the probabilities

.1+.2+.3+0+.1+.1 = .8  <1  the probability should be 1

Probability D

Add the probabilities

.2+.1+.1+.5+0+.1 = 1 This is a correct probability distribution

Answer 2

Answer:

The answer is probability D.

Step-by-step explanation:

The probability distribution should be 1

Probability A

Add the probabilities

.2+.2+.2+.2+.2+.2 = 1.2  >1  cannot happen

Probability B

Add the probabilities

.1+.2+.3+.3+.2+.1 = 1.2  >1  cannot happen

Probability C

Add the probabilities

.1+.2+.3+0+.1+.1 = .8  <1  the probability should be 1

Probability D

Add the probabilities

.2+.1+.1+.5+0+.1 = 1 This is a correct probability distribution

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