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The probability distribution for a
random variable x is given in the table.
X
-10 -5 0
5
10 15 20
Probability ,20 15.05 .1
25 .1 .15
Find the probability that -5 ≤x≤5

Sagot :

The correct answer is 0.3

  • Given as:

                X :  -10     -5      0        5     10       15       20          

     P(X)=f(x): 0.20   0.15   0.05   0.1  0.25     0.1   0.15

  • To find:

  probability of -5≤x≤5

  • Solution: ∑f(x)= f(-5)+f(0)+f(5)

              ⇒ P(-5≤x≤5) = 0.15 +0.05+0.1 = 0.3

Hence, the answer of the given question is 0.3.

To learn more about random variables, refer to:

  • https://brainly.com/question/16730693
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