e unbiased estimate of the variance

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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The waiting times in minutes (Y) of 13 randomly sampled patients who took themselves to a hosptial
Accident and Emergency Unit were recorded together with their age (x). The following summaries were
found.
13
Ex,
117
i=1
13
664
=
i=1
13
Σ
1235
j=1
13
= 34446
i=1
13
Ex,yi
= 5685
i=1
Consider a simple regression model of the type Y~N(a+bx,o²).
What is the unbiased estimate of the variance of the regresion model, o² ?
Please give your solution accurate to within ±0.0001.
Answer:
IM ¡M³ ÎMö ÎMª ÎM³
Transcribed Image Text:The waiting times in minutes (Y) of 13 randomly sampled patients who took themselves to a hosptial Accident and Emergency Unit were recorded together with their age (x). The following summaries were found. 13 Ex, 117 i=1 13 664 = i=1 13 Σ 1235 j=1 13 = 34446 i=1 13 Ex,yi = 5685 i=1 Consider a simple regression model of the type Y~N(a+bx,o²). What is the unbiased estimate of the variance of the regresion model, o² ? Please give your solution accurate to within ±0.0001. Answer: IM ¡M³ ÎMö ÎMª ÎM³
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