Stratum 1 2 N₁ 22000 18000 n₁ 1100 900 Number with mobile phone in the sample 110 600 Calculate an interval estimate of the proportion of young people with their own mobile phone in the municipality with a 95% confidence level.

Stratum 1 2 N₁ 22000 18000 n₁ 1100 900 Number with mobile phone in the sample 110 600 Calculate an interval estimate of the proportion of young people with their own mobile phone in the municipality with a 95% confidence level.

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

A company wants to estimate the proportion of young people with their own mobile
phone in a municipality. Young people are divided into two age groups: 0-7 years and 7-
12 years. In the municipality, there are 40,000 total number of young people and a
stratified random sample of 2000 young people is chosen with proportional allocation.
The result is shown in the table below.

Stratum
1
2
N₁
22000
18000
ni
1100
900
Number with
mobile phone in the
sample
110
600
Calculate an interval estimate of the proportion of young people with their own mobile
phone in the municipality with a 95% confidence level.

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