Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $20,000 and $45,000. Assume that a 95% confidence interval estimate of the population mean annual starting salary is desired. a. What is the planning value for the population standard deviation? b. How large a sample should be taken if the desired margin of error is $300? Round your answers to next whole number. $230? $140?
Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $20,000 and $45,000. Assume that a 95% confidence interval estimate of the population mean annual starting salary is desired. a. What is the planning value for the population standard deviation? b. How large a sample should be taken if the desired margin of error is $300? Round your answers to next whole number. $230? $140?
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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Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $20,000 and $45,000. Assume that a 95% confidence
![**Problem Context:**
Annual starting salaries for college graduates with degrees in business administration are generally expected to be between **$20,000** and **$45,000**. Assume that a **95% confidence interval** estimate of the population mean annual starting salary is desired.
**Questions:**
a. What is the planning value for the population standard deviation?
\[
\sigma = \_\_\_\_
\]
b. How large a sample should be taken if the desired margin of error is **$300**? Round your answers to the next whole number.
\[
\$230? \quad \_\_\_\_
\]
\[
\$140? \quad \_\_\_\_
\]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6b64a519-1474-49ec-8afb-98e9a37e1aea%2Faef55be6-d2f5-443c-a16a-9072d81f14a1%2F1zgnmqe_processed.png&w=3840&q=75)
Transcribed Image Text:**Problem Context:**
Annual starting salaries for college graduates with degrees in business administration are generally expected to be between **$20,000** and **$45,000**. Assume that a **95% confidence interval** estimate of the population mean annual starting salary is desired.
**Questions:**
a. What is the planning value for the population standard deviation?
\[
\sigma = \_\_\_\_
\]
b. How large a sample should be taken if the desired margin of error is **$300**? Round your answers to the next whole number.
\[
\$230? \quad \_\_\_\_
\]
\[
\$140? \quad \_\_\_\_
\]
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