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Business statistics practice test MCQ: variance of random variable x of gamma distribution can be calculated as with choices var(x) = n + 2 ⁄ μsup2;, var(x) = n ⁄ μsup2;, var (x) = n * 2 ⁄ μsup2; and var(x) = n - 2 ⁄ μsup3; for business administration degree preparation with trivia questions and answers online. Free study guide is for online learning rectangular distribution quiz with MCQs to practice test questions with answers.

MCQ: Variance of random variable x of gamma distribution can be calculated as

1. Var(x) = n + 2 ⁄ μsup2;
2. Var(x) = n ⁄ μsup2;
3. Var (x) = n * 2 ⁄ μsup2;
4. Var(x) = n - 2 ⁄ μsup3;

B

MCQ: If value of m in beta distribution is 35 and value of n in beta distribution is 50 then expected value of random variable x in beta distribution is

1. 0.411
2. 0.311
3. 0.511
4. 0.211

A

MCQ: Formula of mean of uniform or rectangular distribution is as

1. mean = 4(b + a) ⁄ 2b
2. mean = (b + a) ⁄ 2
3. mean = (b - 2a) ⁄ 4
4. mean = (2a + 2b) ⁄ 2a

B

MCQ: Formula such as mn ⁄ (m + n)² (m + n + 1) is used to calculate

1. variance in exponential distribution
2. variance in alpha distribution
3. variance in gamma distribution
4. variance in beta distribution

D

MCQ: Formula of calculating expected value of random variable x of gamma distribution is as

1. E(x) = n ⁄ μ
2. E(x) = pq ⁄ μ
3. E(x) = μ ⁄ np
4. E(x) = α ⁄ μ

A