Consider the following discrete probability distribution. -25 0.52 -10 0.16 10 2

Question

Consider the following discrete probability distribution. -25 0.52 -10 0.16 10 25 0.08 P(X=x) a. Complete the probability distribution. (Round your answer to 2 decimal places.) P(X= 10) 0.24 c. What is the probability that the random variable X is negative? (Round your answer to 2 decimal places.) Probability d. What is the probability that the random variable X is greater than -20? (Round your answer to 2 decimal places.) Probability e. What is the probability that the random variable X is less than 25? (Round your answer to 2 decimal places.) Probability

Explanation / Answer

Ans:

a)P(x=10)=1-0.52-0.16-0.08=1-0.76=0.24

c)P(x is negative)=P(x=-25)+P(x=-10)=0.52+0.16=0.68

d)P(x>-20)=P(x=-10)+P(x=10)+P(x=25)=0.16+0.24+0.08=0.48

e)P(x<25)=P(x=-25)+P(x=-10)+P(x=10)=0.52+0.16+0.24=0.92

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