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In this assignment, there’s two questions(Q1 and Q2) broken down into a few more questions. I have provided the Lecture notes document, only pgs. 73-93 are needed for this. This assignment should take no longer than an hour.Thank you.
assignment_8.doc

lecture_notes_c.doc

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Unit/Assignment 8 Research Results & Interpretation: Inferential Statistics (Monday March 25-Sunday March 31)
Chapter 7: Generalizing From Research Results: Inferential Statistics
Lecture Notes: Under ‘Resources,’ you will find ‘Lecture Notes C,’ pp. 73-93.
Assignment 8:
From Book Chapter & Lecture Notes:
Q1. Suppose you wish to test the hypothesis that the number of print media (newspaper, magazine,
and so forth) that people subscribe to is related to subscribers’ education levels. The following
hypothetical data was gathered from five people.
Number of subscriptions, x
4
5
1
2
3
Education level, y (years)
18
20
5
9
15
(1) Draw a scatter diagram.
y
x
(2) Formulate null and research hypotheses that can be tested adequately using a correlation
analysis.
H0: ______________________________________ (p=0)
H1: ______________________________________ (p=0)
?
??
>?
?
Critical Value
Probability 99%: P < .01 (Level of significance of .01) (with df= n - 1) P < .01 (99%) Critical Region ?? >?
?
??
>?
?
Critical Value
3. A test statistic is chosen.
t-test: Comparing Sample Mean with Population Mean
_
x -µ
s
√n
t=
_
x = Sample Mean (3.0)
µ = Population Mean (2.8)
s = Sample Standard Deviation (.8)
_
n = Sample
size (100)
t=
t=
s_
3.0 – 2.8
.8
√100
t value is 2.5
=
.2
.8
10
=
.2
.08
=
2.5
4. A decision rule is formulated.
Define critical value and region: df (Degree of freedom) = n-1
Probability 95%: P < .05 (Level of Significance of .05) (with df= n - 1) P < .05 (95%) Crtical Region Critical Value Critical Region -1.984 +1.984 Critical Value To get the critical value: 1. Go to p. 46 (Critical Values of Student's t distribution: Two-tailed Value) 2. Go to the first column, get the degree of freedom (df=n-1): 99 (df=100 students-1) Find df=99 (p. 48). Then, move horizontally to 0.05 column and get the critical value of 1.984 Decision Rule - If t-value (t=2.5 from Step 3) falls in the critical region, reject the null (H0) and accept the research hypothesis (H1). If ‘t value’ is higher than +1.984, it falls in the critical region (red area). If ‘t value’ is lower than -1.984, it also falls in the critical region (red area). - If t-value (t=2.5 from Step 3) falls in outside the critical region, fail to reject the null (H0). If ‘t value’ is between +1.984 and -1.984, then it falls in the white area (Non-critical region. Critical Values of Student's t distribution (Two-tailed Value) df 0.20 0.10 0.05 0.02 0.01 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 3.078 1.886 1.638 1.533 1.476 1.440 1.415 1.397 1.383 1.372 1.363 1.356 1.350 1.345 1.341 1.337 1.333 1.330 1.328 1.325 1.323 1.321 1.319 1.318 1.316 1.315 1.314 1.313 6.314 2.920 2.353 2.132 2.015 1.943 1.895 1.860 1.833 1.812 1.796 1.782 1.771 1.761 1.753 1.746 1.740 1.734 1.729 1.725 1.721 1.717 1.714 1.711 1.708 1.706 1.703 1.701 12.706 4.303 3.182 2.776 2.571 2.447 2.365 2.306 2.262 2.228 2.201 2.179 2.160 2.145 2.131 2.120 2.110 2.101 2.093 2.086 2.080 2.074 2.069 2.064 2.060 2.056 2.052 2.048 31.821 6.965 4.541 3.747 3.365 3.143 2.998 2.896 2.821 2.764 2.718 2.681 2.650 2.624 2.602 2.583 2.567 2.552 2.539 2.528 2.518 2.508 2.500 2.492 2.485 2.479 2.473 2.467 63.657 9.925 5.841 4.604 4.032 3.707 3.499 3.355 3.250 3.169 3.106 3.055 3.012 2.977 2.947 2.921 2.898 2.878 2.861 2.845 2.831 2.819 2.807 2.797 2.787 2.779 2.771 .763 df 0.20 0.10 0.05 0.02 0.01 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 57. 58. 59. 1.311 1.310 1.309 1.309 1.308 1.307 1.306 1.306 1.305 1.304 1.304 1.303 1.303 1.302 1.302 1.301 1.301 1.300 1.300 1.299 1.299 1.299 1.298 1.298 1.298 1.297 1.297 1.297 1.297 1.296 1.296 1.699 1.697 1.696 1.694 1.692 1.691 1.690 1.688 1.687 1.686 1.685 1.684 1.683 1.682 1.681 1.680 1.679 1.679 1.678 1.677 1.677 1.676 1.675 1.675 1.674 1.674 1.673 1.673 1.672 1.672 1.671 2.045 2.042 2.040 2.037 2.035 2.032 2.030 2.028 2.026 2.024 2.023 2.021 2.020 2.018 2.017 2.015 2.014 2.013 2.012 2.011 2.010 2.009 2.008 2.007 2.006 2.005 2.004 2.003 2.002 2.002 2.001 2.462 2.457 2.453 2.449 2.445 2.441 2.438 2.434 2.431 2.429 2.426 2.423 2.421 2.418 2.416 2.414 2.412 2.410 2.408 2.407 2.405 2.403 2.402 2.400 2.399 2.397 2.396 2.395 2.394 2.392 2.391 2.756 2.750 2.744 2.738 2.733 2.728 2.724 2.719 2.715 2.712 2.708 2.704 2.701 2.698 2.695 2.692 2.690 2.687 2.685 2.682 2.680 2.678 2.676 2.674 2.672 2.670 2.668 2.667 2.665 2.663 2.662 df 60. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70. 71. 72. 73. 74. 75. 76. 77. 78. 79. 80. 81. 82. 83. 84. 85 ... Purchase answer to see full attachment

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