Understanding Hypothesis Testing and T-Tests: A Comprehensive Guide

1. Jeopardy Hypothesis Testing T for Indep. Samples T-test Basics Z-scores Probability $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400 $500 $500 $500 $500 $500

2. Hypothesis Testing--$100 • This always specifies that the treatment had no effect or made no difference. • answer

3. Hypothesis Testing--$200 • Hypothesis testing is said to be this kind of a process because sample data is used to make decisions about a population. • answer

4. Hypothesis Testing--$300 • Rejecting the null hypothesis when, in fact, the null hypothesis is true. • answer

5. Hypothesis Testing--$400 • Retaining the null hypothesis when, in fact, the null hypothesis is false. • answer

6. Hypothesis Testing--$500 • Rejecting the null hypothesis when, in fact, the null hypothesis is false. • answer

7. T-test Basics--$100 • Use a t statistic instead of a z statistic when this is not known. • answer

8. T-test Basics--$200 • The shape of the t-distribution is determined by • answer

9. T-test Basics--$300 • In general, a t-test can be expressed as this ratio. • answer

10. T-test Basics--$400 • Use this kind of t-test when comparing a single sample to a hypothesized population value. • answer

11. T-test Basics--$500 • The alternative hypothesis for a two-tailed t-test comparing the mean of one sample to a hypothesized population mean of 450 ms. • answer

12. Independent Samples--$100 • Another name for an independent samples design. • answer

13. Independent Samples--$200 • The number of scores contributed by each participant in an independent samples design. • answer

14. Independent Samples--$300 • In an independent samples design, this special calculation of variability must be computed and used to figure the estimated standard error. • answer

15. Independent Samples--$400 • A simple average of the group variances can be used to calculate estimated standard error only when __________. • answer

16. Independent Samples--$500 • For an independent samples design, if df=18 the total number of participants must be ___. • answer

17. Z-scores-$100 • The z-score that would indicate a score located 2 standard deviation units below the mean. • answer

18. Z-scores--$200 • If a person earns a score that is equal to the population mean, that person’s z-score will be ___. • answer

19. Z-scores--$300 • The distribution of z-scores always has a standard deviation of ___. • answer

20. Z-scores--$400 • The two pieces of population information you need in order to transform a raw score into a z-score. • answer

21. Z-scores--$500 • If the original distribution is negatively skewed, the shape of the distribution after a z-score transformation will be ___________. • answer

22. Probability--$100 • In general, the probability of A is computed by taking __________ and dividing by ________. • answer

23. Probability--$200 • For the definition of probability to be accurate, the outcomes must be obtained by a process called ___________. • answer

24. Probability--$300 • Provides a complete listing of z-scores and their corresponding proportions of the normal distribution. • answer

25. Probability--$400 • The _____ always corresponds to the larger part of the distribution, whether it is on the right-hand side or the left-hand side of the distribution. • answer

26. Probability--$500 • When finding the ______ for a particular score, we are always looking for the proportion of the distribution to the _____ of the x value. • answer

27. Hypothesis Testing--$100 • A: What is the null hypothesis? • Back to board

28. Hypothesis Testing--$200 • A: What is inferential? • Back to board

29. Hypothesis Testing--$300 • A: What is a type I error? • Back to board

30. Hypothesis Testing--$400 • A: What is a type II error? • Back to board

31. Hypothesis Testing--$500 • A: What is power? • Back to board

32. T-test Basics--$100 • A: What is the population standard deviation or the population variance? • Back to board

33. T-test Basics--$200 • A: What is df or n? • Back to board

34. T-test Basics--$300 • A: What is obtained (observed) difference over difference expected by chance alone? • Back to board

35. T-test Basics--$400 • A: What is a one sample or single sample t? • Back to board

36. T-test Basics--$500 • A: What is µ is not equal to 450? • Back to board

37. Independent Samples--$100 • A: What is a between-subjects design? • Back to board

38. Independent Samples--$200 • A: What is 1? • Back to board

39. Independent Samples--$300 • A: What is pooled variance? • Back to board

40. Independent Samples--$400 • A: What is n1=n2? • Back to board

41. Independent Samples--$500 • A: What is 20? • Back to board

42. Z-scores--$100 • A: What is z = -2.0 ? • Back to board

43. Z-scores--$200 • A: What is z = 0.00 ? • Back to board

44. Z-scores--$300 • A: What is 1? • Back to board

45. Z-scores--$400 • A: What are the population mean and the population standard deviation? • Back to board

46. Z-scores--$500 • A: What is the same—negatively skewed? • Back to board

47. Probability--$100 • A: What is • # of outcomes classified as A • total # of possible outcomes • Back to board

48. Probability--$200 • A: What is random sampling? • Back to board

49. Probability--$300 • A: What is the unit normal table? • Back to board

50. Probability--$400 • A: What is the body? • Back to board