A random sample of residents from various income brackets was asked their opinion on tax reform for the country of Guyana. The data so gathered were analyzed by a statistician and the results he obtained using MINITAB are shown below:   Expected counts are printed below observed counts     Low Middle High Total For 26 (30.67) 75 (51.11) 14 (33.22) 115 Against 60 (69.33) 95 (115.56) 105 (**) 260 Neutral 34 (20) 30 (33.33) 11 (21.67) 75 Total * 200 130 450 Chi-sq = 0.71 + 11.17 + 11.12 +     *** + 3.66 + 11.89 +     9.8 + 0.33 + 5.25 = 55.2 DF =??, p-value =???   Carefully define the null and alternative hypotheses of the ?2 test underlying the generation of the above Find the missing values ‘*’, ‘**’, ‘***’, ‘??’ and ‘???’. What is the conclusion of this test? Give reasons for your answer

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A random sample of residents from various income brackets was asked their opinion on tax reform for the country of Guyana. The data so gathered were analyzed by a statistician and the results he obtained using MINITAB are shown below:

 

Expected counts are printed below observed counts

 

 

Low

Middle

High

Total

For

26

(30.67)

75

(51.11)

14

(33.22)

115

Against

60

(69.33)

95

(115.56)

105

(**)

260

Neutral

34

(20)

30

(33.33)

11

(21.67)

75

Total

*

200

130

450

Chi-sq =

0.71 +

11.17 +

11.12 +

 

 

*** +

3.66 +

11.89 +

 

 

9.8 +

0.33 +

5.25 =

55.2

DF =??, p-value =???

 

  1. Carefully define the null and alternative hypotheses of the ?2 test underlying the generation of the above
  2. Find the missing values ‘*’, ‘**’, ‘***’, ‘??’ and ‘???’.
  3. What is the conclusion of this test? Give reasons for your answer.
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