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The probability distribution for arandom variable x is given in the table.x- 101505101520Probability2015.0511125.1.15Find the probability that x < 20Enter

The probability distribution for arandom variable x is given in the table.x- 101505101520Probability-example-1
User Ming Liu
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1 Answer

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19 votes

Answer

P (x ≤ 20) = 1.00

Step-by-step explanation

We are given the probability distribution for a random variable x that ranges from -10 to 20, in steps of 5.

We are then told to calculate the probability that x ≤ 20.

Note that this stands for the probability that x is less than or equal to 20.

P (x ≤ 20) = P(x=20) + P(x=15) + P(x=10) + P(x=5) + P(x=0) + P(x=-5) + P(x=-10)

= 0.15 + 0.10 + 0.25 + 0.10 + 0.05 + 0.15 + 0.20 (These numbers are given in the table)

= 1.00

Hence, P (x ≤ 20) = 1.00

Hope this Helps!!!

User Peter Brennan
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