: Let x, X2, X and y,, y2, Ym represent two independent random samples from the respective mal distributions N(4, 0f) and N(H2, 0). It is given that of = 303, but ažis unknown. Then 1. A random variable that can be used to find a 95% confidence interval for - is

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Q2: Let x1,X2, . , Xn and y1, y2, ..., Ym represent two independent random samples from the respective
normal distributions N(H1,07) and N (H2, 03). It is given that of = 30, but ožis unknown. Then
1. A random variable that can be used to find a 95% confidence interval for - is
(x- y) - (H1 - H2)
А.
ns3 + ms n+m.
3(n+m-2)"tm,
nm
O A
(x – y) – (41 – H2)
В.
ns? + ms; n + m.
(n + m –
- 2)
пт
(x – y) – (41 - H2)
С.
ns3 + mS;_n+3
3(n+ m-2)
("+3m
nm
Ос
Transcribed Image Text:Q2: Let x1,X2, . , Xn and y1, y2, ..., Ym represent two independent random samples from the respective normal distributions N(H1,07) and N (H2, 03). It is given that of = 30, but ožis unknown. Then 1. A random variable that can be used to find a 95% confidence interval for - is (x- y) - (H1 - H2) А. ns3 + ms n+m. 3(n+m-2)"tm, nm O A (x – y) – (41 – H2) В. ns? + ms; n + m. (n + m – - 2) пт (x – y) – (41 - H2) С. ns3 + mS;_n+3 3(n+ m-2) ("+3m nm Ос
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