X₁ and X₂ are independent Poisson random variables such that: P(X₁ = 2) = P(X₁ = 1)P(X₂ = 2) = P(X₂ = 3) Find the variance of (X₁ − 2X₂).

A certain task can be accomplished in a factory by four different workers on five different types of machines. A sample study in context of a two-way design without repeated value is being made with two fold objectives of examining whether the four workers differ with respect to mean productivity and whether it is same for five machines. The researcher involved in this study reports gathered data as under : Sum of squares for variance between machines = 35.2 Sum of squares

If in 6 trials, X is a binomial variate which follows the relation 9 P(X = 4) = P(X = 2) then what is the probability of success? Options:(a) 1/8 (b) 1/4 (c) 3/8 (d) 3

(Indian Statistical Service) ISS PREVIOUS YEAR QUESTION PAPERS Indian Statistical Service (ISS) Previous Year Question Papers & Answer Keys – Year-

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Discuss the role of intellectuals in giving shape to the nationalism in India during the freedom struggle.

Let X have a Bernoulli distribution with mean 0.4. What is the variance of (2X − 3)? Options: (a) 0.24(b) 0.48(c) 0.60(d) 0.96

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iss previous year solution paper-2 q.no.1

Intellectuals played a crucial role in shaping and spreading nationalism in India during the freedom struggle. They provided ideological foundations, mobilized public opinion, and inspired people to challenge British colonial rule.

ISS PREVIOUS YEAR PAPER-1 2016 SET A Q.NO.-1 Let (X, Y) be jointly distributed with density f(x, y) = e^(-y), for 0 < x < y < ∞ OR f(x, y) = 0, otherwise Consider the following statements: E(X) = 1 E(Y) = 2 E(XY) = 2 Which of the above are correct? (a) 1 and 2 only(b) 2 and 3 only(c) 1 and 3 only(d) 1, 2 and 3

Indian Statistical Service (ISS) Previous Year Question Paper/Answer Key Year Wise UPSC IES/ISS 2021: Download PDF Free Previous Year...