Answered: i.The 95% Confidence Interval for an…

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

i.The 95% Confidence Interval for an unknown population mean is calculated using
a sample size of 64 and is presented as (273, 663). Determine the sample mean and
the population standard deviation.
ii.Two students, A and B, from different countries take a similar, though not
identical, psychometric test. The test also has a different marking scheme. Below
are the student marks, country mean and country standard deviation of marks.
Which student did best in their country and why? Explain your answer.

Student in
Student mark
country u
country o
country
A
2.85
3.0
0.7
В
77
80
10

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