(a) In a survey of 10 850 people restricted to those who were either black or male or over 18 years of age, the following data were obtained: | Black: 3500 Female: 6180 |Over 18: 4780 Black females: 1900 Black female over 18: 200 Over 18 and female: 980 Over 18 and black: 1200 The data are inconsistent. Explain why?

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(a) In a survey of 10 850 people restricted to those who were either black or
male or over 18 years of age, the following data were obtained:
| Black: 3500
Female: 6180
|Over 18: 4780
Black females: 1900
Black female over 18: 200
Over 18 and female: 980
Over 18 and black: 1200
The data are inconsistent. Explain why?
Transcribed Image Text:(a) In a survey of 10 850 people restricted to those who were either black or male or over 18 years of age, the following data were obtained: | Black: 3500 Female: 6180 |Over 18: 4780 Black females: 1900 Black female over 18: 200 Over 18 and female: 980 Over 18 and black: 1200 The data are inconsistent. Explain why?
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