3) An investigation is conducted to investigate the weights among the students at School Alpha. The investigator knows that the average weight of students at the school is distributed by normal distribution. A random sample of 10 students are randomly selected from the school and their weights are measured as follows 42, 45, 56, 72, 83, 60, 71, 48, 50, 62 a) Propose a pivotal quantity that can be used to estimate confidence interval and explain the choice of the pivotal quantity. b) Calculate the 95% confidence interval for the average weight of students at School Alpha.
3) An investigation is conducted to investigate the weights among the students at School Alpha. The investigator knows that the average weight of students at the school is distributed by normal distribution. A random sample of 10 students are randomly selected from the school and their weights are measured as follows 42, 45, 56, 72, 83, 60, 71, 48, 50, 62 a) Propose a pivotal quantity that can be used to estimate confidence interval and explain the choice of the pivotal quantity. b) Calculate the 95% confidence interval for the average weight of students at School Alpha.
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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Transcribed Image Text:3) An investigation is conducted to investigate the weights among the students at School
Alpha. The investigator knows that the average weight of students at the school is
distributed by normal distribution. A random sample of 10 students are randomly
selected from the school and their weights are measured as follows
42, 45, 56, 72, 83, 60, 71, 48, 50, 62
a) Propose a pivotal quantity that can be used to estimate confidence interval and
explain the choice of the pivotal quantity.
b) Calculate the 95% confidence interval for the average weight of students at
School Alpha.
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