4. Lisa aims to find out whether citicens of Springfield are more extraverted than the average population of the US. She knows that the mean population value μ for extraversion is 15. However, she does not know the variance or standard deviation of the population. She assesses extraversion in 20 citizens of Springfield with a questionnaire. The mean value is 17.8 and the standard deviation is 5.2. Data are normally distributed. Please test on the 5% error level whether citizens of Springfield are more extraverted than the average population • H0: μ = μο • Η1: μ > μο

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Explain please!! It's for the mock exam, i already have the anwers but I need the procedure (it's not for the real exam, it's for the practice exam)

4. Lisa aims to find out whether citicens of Springfield are more extraverted than the average population of the
US. She knows that the mean population value μ for extraversion is 15. However, she does not know the
variance or standard deviation of the population. She assesses extraversion in 20 citizens of Springfield with a
questionnaire. The mean value is 17.8 and the standard deviation is 5.2. Data are normally distributed. Please
test on the 5% error level whether citizens of Springfield are more extraverted than the average population
•
H0: μ = μο
•
Η1: μ > μο
Transcribed Image Text:4. Lisa aims to find out whether citicens of Springfield are more extraverted than the average population of the US. She knows that the mean population value μ for extraversion is 15. However, she does not know the variance or standard deviation of the population. She assesses extraversion in 20 citizens of Springfield with a questionnaire. The mean value is 17.8 and the standard deviation is 5.2. Data are normally distributed. Please test on the 5% error level whether citizens of Springfield are more extraverted than the average population • H0: μ = μο • Η1: μ > μο
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