A random sample of residents from various income brackets were 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 95 105 260 (69.33) (115.56) ( **) Neutral 34 30 11 75 (20) (33.33) (21.67) 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 =??? a) Carefully define the null and alternative hypothese b) Carefully define the null and alternative hypotheses of the ?2 test underlying the generation of the above table. c) Find the missing values ‘*’, ‘**’, ‘***’, ‘??’ and ‘???’. d) What is the conclusion of this test? Give reasons for your answe
A random sample of residents from various income brackets were 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 95 105 260 (69.33) (115.56) ( **)
Neutral 34 30 11 75 (20) (33.33) (21.67)
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 =???
a) Carefully define the null and alternative hypothese
b) Carefully define the null and alternative hypotheses of the ?2 test underlying the generation of the above table.
c) Find the missing values ‘*’, ‘**’, ‘***’, ‘??’ and ‘???’.
d) What is the conclusion of this test? Give reasons for your answer.
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