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For a Pascal distribution; r=3 and the probability of success is 0.7895. What will be the value of “σ”?

For a Pascal distribution; r=3 and the probability of success is 0.7895. What will be the value of “σ”? Correct Answer 1.0065

We know, for a Pascal distribution, σ2=r(1-p)/p2 Evaluation of the above equation using the values r=3 and p=0.7895, we get, σ=1.0063.

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