x 2 4 5 6 9
P(x) 0.20 0.15 0.21 0.14 .88
Use this Probability Distribution for problems #2, #3 and #4:

2. Find missing probability in this Discrete Distribution.
3. Calculate Mean (Expected Value) µ.
4. Calculate Variance σ².
I have this problem that I have no clue how to solve for my homework...any help would be appreciated

Question

x	2	4	5	6	9
P(x)	0.20	0.15	0.21	0.14	.88
Use this Probability Distribution for problems #2, #3 and #4:



2. Find missing probability in this Discrete Distribution.  
3. Calculate Mean (Expected Value)   µ.
4. Calculate Variance   σ².
I have this problem that I have no clue how to solve for my homework...any help would be appreciated

anonymous · Answer

I'm just going to format that table a little better so I can see it more clearly . . .

anonymous · Answer

ok i appreciate the help

anonymous · Answer

It looks like you already found the missing p(x). I don't see any gaps.

anonymous · Answer

my bad 9 is a ? i just think its .88 but im not quite sure

anonymous · Answer

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anonymous · Answer

Yeah, that doesn't work.
|dw:1349669347068:dw|