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13. A researcher took a sample. The mean of the sample was 192. 14. They assumed that the population standard deviation was 0.174. 15. An analyst wanted to test whether the population mean was more than 25._ 16. A sample was taken and its standard deviation was 7.3. 17. A sample of 30 tax returns was taken, so the sample size is 30. 18. Is the mean of this population smaller than 14?_ 19. A researcher argued that the population mean was not 215. 20. Test whether the population proportion is higher than 0.35. 21. The average age in the population of students was 21.2. 22. The average age in the sample of students was 20.8. 23. The population standard deviation of the age of the students was 2.4. 24. The sample standard deviation of the age of the students was 1.8. 25. The proportion of 1st-year students in the sample was 0.34._

13. A researcher took a sample. The mean of the sample was 192. 14. They assumed that the population standard deviation was 0.174. 15. An analyst wanted to test whether the population mean was more than 25._ 16. A sample was taken and its standard deviation was 7.3. 17. A sample of 30 tax returns was taken, so the sample size is 30. 18. Is the mean of this population smaller than 14?_ 19. A researcher argued that the population mean was not 215. 20. Test whether the population proportion is higher than 0.35. 21. The average age in the population of students was 21.2. 22. The average age in the sample of students was 20.8. 23. The population standard deviation of the age of the students was 2.4. 24. The sample standard deviation of the age of the students was 1.8. 25. The proportion of 1st-year students in the sample was 0.34._

MATLAB: An Introduction with Applications
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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7:19 APPLICATION QUESTIONS Directions: This class is like a series of word problems. Not only with the problems be in words, but also you will have to explain what the statistical results mean in words. Therefore, the skill of going from words to math and math to words will be crucial. Write the italicized portion of each statement in mathematical notation. Only the italicized portion needs to be translated into notation: 5G UC lll 23% Example: Test whether the mean of a population is 12. Answer: μ = 12 13. A researcher took a sample. The mean of the sample was 192. 14. They assumed that the population standard deviation was 0.174. 15. An analyst wanted to test whether the population mean was more than 25. 16. A sample was taken and its standard deviation was 7.3. 17. A sample of 30 tax returns was taken, so the sample size is 30. 18. Is the mean of this population smaller than 14? 19. A researcher argued that the population mean was not 215. 20. Test whether the population proportion is higher than 0.35. 21. The average age in the population of students was 21.2. . The average age in the sample of students was 20.8. 23. The population standard deviation of the age of the students was 2.4. 24. The sample standard deviation of the age of the students was 1.8. 25. The proportion of 1st-year students in the sample was 0.34. ||| 2 of 2 O
Transcribed Image Text:7:19 APPLICATION QUESTIONS Directions: This class is like a series of word problems. Not only with the problems be in words, but also you will have to explain what the statistical results mean in words. Therefore, the skill of going from words to math and math to words will be crucial. Write the italicized portion of each statement in mathematical notation. Only the italicized portion needs to be translated into notation: 5G UC lll 23% Example: Test whether the mean of a population is 12. Answer: μ = 12 13. A researcher took a sample. The mean of the sample was 192. 14. They assumed that the population standard deviation was 0.174. 15. An analyst wanted to test whether the population mean was more than 25. 16. A sample was taken and its standard deviation was 7.3. 17. A sample of 30 tax returns was taken, so the sample size is 30. 18. Is the mean of this population smaller than 14? 19. A researcher argued that the population mean was not 215. 20. Test whether the population proportion is higher than 0.35. 21. The average age in the population of students was 21.2. . The average age in the sample of students was 20.8. 23. The population standard deviation of the age of the students was 2.4. 24. The sample standard deviation of the age of the students was 1.8. 25. The proportion of 1st-year students in the sample was 0.34. ||| 2 of 2 O
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