Questions 18 – 28. A researcher is interested in whether psychology students are less happy than...

Questions 18 – 28. A researcher is interested in whether psychology students are less happy than other students. The mean happiness score for the population is 8. The researcher administers a happiness scale to 25 BC students and obtains a mean of 5 and variance of 49.The researcher uses an alpha level of 0.05.

18. Is this a one- or two-tailed test?

19. What is the null hypothesis?

20. What is the alternative hypothesis?

21. What are the degrees of freedom?

22. What is t critical?

23. What is the standard error?

24. What is the t statistic (t obtained)?

25. What decision would you make about H0?

26. What can you conclude?

27. What is the effect size?

28. What does this effect size mean?

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Expert Solution

orchestra answered 11 months ago

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