SOLUTION: a random variable X has the following probability distribution.
x|1|2|3|4|5|
p(x=x)|1/15|a|1/5|b|1/3|
if E(x)=11/3 find the values of a and b
Algebra ->
Probability-and-statistics
-> SOLUTION: a random variable X has the following probability distribution.
x|1|2|3|4|5|
p(x=x)|1/15|a|1/5|b|1/3|
if E(x)=11/3 find the values of a and b
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Question 634051: a random variable X has the following probability distribution.
x|1|2|3|4|5|
p(x=x)|1/15|a|1/5|b|1/3|
if E(x)=11/3 find the values of a and b
Hi,
if E(x)=11/3 find the values of a and b
Two unknowns, needs 2 EQs... to find a and b
I. or
II. comes from the E(x) = or
a + b = 2/5
2a + 4b = 4/3 |Verify the 2 Eqs and Solve for a and b
