SOLUTION: If x={10, 20, 30, 40} and p(10)=0.30, p(20)=0.30, p(30)=0.30 and p(40)=0.30, can distribution of the random variable x be considered a probability distribution? yes no not en

Question 1077434: If x={10, 20, 30, 40} and p(10)=0.30, p(20)=0.30, p(30)=0.30 and p(40)=0.30, can distribution of the random variable x be considered a probability distribution?
yes
no
not enough information
too much information
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Answer: Choice B) no

Add up the probability values: 0.30+0.30+0.30+0.30 = 1.20

The sum is NOT equal to 1, so this is NOT a probability distribution. The sum of all the probabilities must be equal to 1.
RELATED QUESTIONS
If X={10, 20, 30, 40} and P(10)=0.30, P(20)=0.30, P(30)=0.30, and P(40)=0.30, can... (answered by Edwin McCravy)

Let be a random variable with the following probability distribution: Value... (answered by oscargut)

Q8: A discrete random variable x has the following probability distribution: (answered by ikleyn)

Question 2 A.The table below shows the probability distribution for a discrete random... (answered by mntnvisions)

p^2 +13p -30... (answered by stanbon,Alan3354)

p^2+13p-30=0 (answered by edjones)

H0:P=0 HA:P>0 r=0.30 n=20 α=0.0 Test the above set of hypotheses (answered by CPhill)

Suppose x is a uniform random variable with a = 30 and b = 60. Find P(x < 38 | x < 50). (answered by ikleyn)

Compute the mean and variance of the following discrete probability distribution. x (answered by Fombitz)