Q4.2) Construct a 95% confidence interval for the true average monthly salary earned by all employees of People Plus Pty, if it was found that the average monthly salary earned by a sample of 19 employees of the company was R18 500, with a standard deviation of R1 750 What can we do to make the confidence interval narrower in Q.4.2, without changing the confidence level?

Q4.2) Construct a 95% confidence interval for the true average monthly salary earned by all employees of People Plus Pty, if it was found that the average monthly salary earned by a sample of 19 employees of the company was R18 500, with a standard deviation of R1 750 What can we do to make the confidence interval narrower in Q.4.2, without changing the confidence level?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Q4.2) Construct a 95% confidence interval for the true average monthly salary
earned by all employees of People Plus Pty, if it was found that the average
monthly salary earned by a sample of 19 employees of the company was
R18 500, with a standard deviation of R1 750 What can we do to make the confidence interval narrower in Q.4.2, without
changing the confidence level?

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