You are working as an assistant to the dean of institutional research at your university. The dean wants to survey members of the alumni association who obtained their baccalaureate degrees 5 years ago to learn what their starting salaries were in their first full-time job after receiving their degrees. A sample of 150 alumni is to be randomly selected from the list of 2,100 graduates in that class. If the dean's goal is to construct a 90% confidence interval estimate for the population mean starting salary, why is it not possible that you will be able to use the expression X+ Zo 06- for this purpose? Explain. Why is it not possible to use the equation? A. The population standard deviation a is not known. B. The sample size n is too large to use this expression. C. The sample sizen is not large enough to use this expression. D. The sample mean X might not be a whole number, but the number of students must be.

You are working as an assistant to the dean of institutional research at your university. The dean wants to survey members of the alumni association who obtained their baccalaureate degrees 5 years ago to learn what their starting salaries were in their first full-time job after receiving their degrees. A sample of 150 alumni is to be randomly selected from the list of 2,100 graduates in that class. If the dean's goal is to construct a 90% confidence interval estimate for the population mean starting salary, why is it not possible that you will be able to use the expression X+ Zo 06- for this purpose? Explain. Why is it not possible to use the equation? A. The population standard deviation a is not known. B. The sample size n is too large to use this expression. C. The sample sizen is not large enough to use this expression. D. The sample mean X might not be a whole number, but the number of students must be.

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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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

You are working as an assistant to the dean of institutional research at your university. The dean wants to survey members of the alumni association who obtained
their baccalaureate degrees 5 years ago to learn what their starting salaries were in their first full-time job after receiving their degrees. A sample of 150 alumni is to
be randomly selected from the list of 2,100 graduates in that class. If the dean's goal is to construct a 90% confidence interval estimate for the population mean
starting salary, why is it not possible that you will be able to use the expression X+ Zo 06-
for this purpose? Explain.
Why is it not possible to use the equation?
A. The population standard deviation a is not known.
B. The sample size n is too large to use this expression.
C. The sample sizen is not large enough to use this expression.
D. The sample mean X might not be a whole number, but the number of students must be.

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