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7. A survey among the workers in a large manufacturing company was taken, in order to find out from which company the workers had purchased their mobile phones, and to find out whether the choice of mobile phone company was related to the type of worker. The results are shown in the table below. Company of mobile phone Туре of Pink Green Blue Yellow Total workers Executive 15 6 33 Middle 21 25 8 62 management Secretarial 33 36 11 85 Labourer 40 29 12 8 89 Total 109 96 37 27 269 Is there evidence, at 5% level, that the choice of Phone Company is independent of the type of worker?

7. A survey among the workers in a large manufacturing company was taken, in order to find out from which company the workers had purchased their mobile phones, and to find out whether the choice of mobile phone company was related to the type of worker. The results are shown in the table below. Company of mobile phone Туре of Pink Green Blue Yellow Total workers Executive 15 6 33 Middle 21 25 8 62 management Secretarial 33 36 11 85 Labourer 40 29 12 8 89 Total 109 96 37 27 269 Is there evidence, at 5% level, that the choice of Phone Company is independent of the type of worker?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 6E
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7. A survey among the workers in a large manufacturing company was taken, in order to find out from which company the workers had purchased their mobile phones, and to find out whether the choice of mobile phone company was related to the type of worker. The results are shown in the table below. Company of mobile phone Туре of Pink Green Blue Yellow Total workers Executive 15 33 Middle 21 25 8 8 62 management Secretarial 33 36 11 5 85 Labourer 40 29 12 8 89 Total 109 96 37 27 269 Is there evidence, at 5% level, that the choice of Phone Company is independent of the type of worker?
Transcribed Image Text:7. A survey among the workers in a large manufacturing company was taken, in order to find out from which company the workers had purchased their mobile phones, and to find out whether the choice of mobile phone company was related to the type of worker. The results are shown in the table below. Company of mobile phone Туре of Pink Green Blue Yellow Total workers Executive 15 33 Middle 21 25 8 8 62 management Secretarial 33 36 11 5 85 Labourer 40 29 12 8 89 Total 109 96 37 27 269 Is there evidence, at 5% level, that the choice of Phone Company is independent of the type of worker?
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