Answered: find a 95% confidence interval of the…

Math

Statistics

find a 95% confidence interval of the form (0,b) for the variance of the height of children at 3 years.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

data consist of height measurements in centimeters of 5 randomly selected children at ages 3 and 5. Assume data are observed from 2 independent normal populations.

find a 95% confidence interval of the form (0,b) for the variance of the height of children at 3 years.

Child
3 years old 5 years old Difference
i
Yi
Yi – X;
1
95.6
114.8
19.2
2
75.4
84.0
8.6
3
76.6
99.7
23.1
4
99.4
121.0
21.6
5
65.7
80.7
15.0
Observed sample mean
82.5
100.0
17.5
Observed sample variance
206.2
322.2
34.1

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