8. A researcher has exam result for students who took a training course for a national exam. The researcher wants to know if trained students score above the national average of 850. Which of following is the parameter of interest? a. The researcher b. The national exam c. The training course d. The average score of 850 9. Refer to item 8, what will be the null hypothesis? b. Но: и> 850. a. Ho: μ- 850 с. Но: и< 850 d. Ho: µ± 850 10. Refer to item 8, what will be the alternative hypothesis? b. На: и> 850 a. Ha: µ=850 c. Ha: μ< 850 d. Ha: µ# 850

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