Question

0.4
Choose the correct alternative and rewrite the sentence:
1) For two random variable X and Y the relation E(X.Y) = E(X).E(Y)...
a) If X and Y are identical
b) For All X and Y
c) If X and Y are statistically
d) None of these
independent
2) The mean and variance of Binomial distribution are same if
a) p <a b)p> 9 c)p=9 d) np = npq.
3) The moment generating function of gamma distribution is
a) (1 + )+ b) (1 - t) c) (1 - 0)-
d) (1 +t)
4) Correlation coefficient is of change of scale.
a) Dependent
b) Independent
c) Independent and dependent
d) None of these
5) B2 for the normal distribution is
a) 1 B) 3 c)
d) 415
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Answer 1

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1. if X and Y are statistically.

2.p=9

3. (1+t)

4. None of these

5.415