5.STATISTICAL INFERENCEQuestion 3 a i) a)In a random sample of 20 second year statistics students from a normal distribution, N (μ, 0²)selected by a lecturer, found that20Σ1 X = 30 and 21 x = 60.i) If the lecturer assumes that μ = 2, what is her 90% two sided confidence interval for o²?

The following information has been provided: The sample size is n=20. ∑i=120Xi=30∑i=120Xi2=60

Answered: a) In a random sample of 20 second year…

MATLAB: An Introduction with Applications

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ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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a) In a random sample of 20 second year statistics students from a normal distribution, N (μ,0²) selected by a lecturer, found that Σ?1 X = 30 and 21x? = 60. i) If the lecturer assumes that μ = 2, what is her 90% two sided confidence interval for σ²?