Marvle8425 Marvle8425

08-01-2024
Mathematics

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With reference to Exercise 8.2, show that if the two samples come from normal populations, then X1 - X2 is a random variable having a normal distribution with the mean μ1 - μ2 and the variance...

a) σ1² + σ2²
b) σ1² - σ2²
c) σ1 + σ2
d) σ1 - σ2

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