Question: The probability distribution for the random variable x follows. xf ( x ) 200.20250.15300.30350.35(a) Is this probability distribution valid? Explain. Since f ( x )

The probability distribution for the random variablexfollows.

xf(x)

200.20250.15300.30350.35(a)

Is this probability distribution valid? Explain.

Sincef(x)

?

=

0

for all values ofxandf(x) =,

this

---Select---

is

is not

a proper probability distribution.

(b)

What is the probability thatx= 30?

(c)

What is the probability thatxis less than or equal to 25?

(d)

What is the probability thatxis greater than 30?

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