DEFINITIONS & NOTATION Fill in the blanks: 1. The group of all subjects or objects of interest is the ___________________________. 2. A characteristic of a population is called a _______________________________, while a ______________________________________________ is a characteristic of a sample. 3. ___________________________________________ is the process of finding out about populations by examining samples. 4. What is the symbol for a population mean? ________. What is the name of this letter? ________. 5. What is the symbol for a sample mean? ______. 6. What is the symbol for a population standard deviation? _________. What is the name of this letter? ________________. 7. What is the symbol for a sample standard deviation? ________. 8. What is the symbol for a population proportion?____. What is the symbol for a sample proportion?___ 9. What is the symbol for the null hypothesis? _________. And the alternative hypothesis? _________. 10. What is the symbol for a significance level? ______. What is the name of this letter? _____________. Questions continue on the back APPLICATION QUESTIONS Part 1 - Directions: Write the italicized portion of each statement in mathematical notation: Example: A researcher supposed that the mean of a population was 12. Answer: 12 11. A researcher took a sample. The mean of the sample was 192. ______________________ 12. A researcher assumed that the population standard deviation was 0.174. ___________________ 13. A researcher wanted to test whether a population mean was more than 25. ____________________ 14. A sample was taken. The standard deviation of the sample was 7.3. _______________________ 15. A sample was taken. The sample size was 30. _________________ 16. Is the mean of this population smaller than 14? ____________________ 17. A researcher argued that the population mean was not 215. ______________________ 18. Test whether the population proportion is higher than 0.35. ____________________ Part 2 - Directions: write the mathematical statement in words, in at least two different ways Example: 2500 Possible Answers: The population mean is less than 2500. The population mean has decreased from 2500. The population mean is smaller than 2500. etc. as you can see, there are many right answers! 19. 11 20. 0.78 21. 300 22. 0.21