Question 2 - Week 3 Practice | Prasnya
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Week 3
Question 2
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Est. 3 min
Marks:
+3.00
0.00
The probability mass function of a discrete random variable
X
X
is given by the table. Find the value of
b
b
such that
E
(
X
)
=
2.5
E(X)=2.5
. Enter the answer correct to one decimal place.
Integer answer
Medium Difficulty
26 October 2025
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