In the year 1999, a survey was undertaken to find the salary of employees working in software companies. In a sample of 500 employees, 60% of them received a salary of $6000 per month. A similar survey was conducted five years later and showed that 75% of employees received $6000 per month in a sample of 620 employees. Use Excel to construct a 90% confidence interval for the difference in population proportions of employees whose salary was $6000 in 1999 and employees whose salary was $6000 five years later. Assume that random samples are obtained and the samples are independent. Round your answers to three decimal
In the year 1999, a survey was undertaken to find the salary of employees working in software companies. In a sample of 500 employees, 60% of them received a salary of $6000 per month. A similar survey was conducted five years later and showed that 75% of employees received $6000 per month in a sample of 620 employees. Use Excel to construct a 90% confidence interval for the difference in population proportions of employees whose salary was $6000 in 1999 and employees whose salary was $6000 five years later. Assume that random samples are obtained and the samples are independent. Round your answers to three decimal
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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In the year 1999, a survey was undertaken to find the salary of employees working in software companies. In a sample of 500 employees, 60% of them received a salary of $6000 per month. A similar survey was conducted five years later and showed that 75% of employees received $6000 per month in a sample of 620 employees.
Use Excel to construct a 90% confidence interval for the difference in population proportions of employees whose salary was $6000 in 1999 and employees whose salary was $6000 five years later. Assume that random samples are obtained and the samples are independent.
Round your answers to three decimal places.
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