A random variable X has the probability distribution

value 1 2 3 4

probability 0.5 0.25 0.125 0.125

(For those of you who are interested, this is the geometric p=0.5 “killed” at 4. X is the number of times I toss a coin if I follow this rule: I’ll toss the coin till I get the first head, but I’ll stop after 4 tosses even if I haven’t got a head by that time.)

b. Find SE(X)

Answer please!

Question

A random variable X has the probability distribution

value                1         2             3              4

probability       0.5     0.25       0.125       0.125

(For those of you who are interested, this is the geometric p=0.5 “killed” at 4. X is the number of times I toss a coin if I follow this rule: I’ll toss the coin till I get the first head, but I’ll stop after 4 tosses even if I haven’t got a head by that time.)

b. Find SE(X)

Answer please!

anonymous · Answer

problem 3
A die is rolled 60 times.
3A: 10
3B: 2.8865
3C: 0.1370
3D: 0.1375
3E: 0.3966
3F:  0.3959

anonymous · Answer

1.0532

anonymous · Answer

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anonymous · Answer

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anonymous · Answer

thnx

anonymous · Answer

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