6.STATISTICAL INFERENCEQuestion 3 a ii) 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 21x? = 60.ii) If the lecturer assumes that u is unknown, what will be her 90% two sided confidence intervalfor o²?

From the provided information, n=20∑i=120Xi=30∑i=120Xi2=60

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

MATLAB: An Introduction with Applications

6th Edition

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,σ²) selected by a lecturer, found that Σ?1 X = 30 and E1 x? = 60. ii) If the lecturer assumes that μ is unknown, what will be her 90% two sided confidence interval for o²?