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.

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.7: Probability

Problem 58E: What is meant by the sample space of an experiment?

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