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Q4. Human blood is grouped into four types: A, B, AB & O. Type O blood...

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Q4. Human blood is grouped into four types: A, B, AB & O.Type O blood can be transfused to anyone (the universal donor)while people with Type AB blood can receive any blood type (theuniversal recipient). A country is recruiting soldiers butunsuccessful applicants accuse there exists discrimination on theirblood type—too many Type A & B applicants are rejected whiletoo many Type O & AB applicants are accepted. Usegoodness-of-fit test, test whether the number of recruited soldiersin each blood type are different from the country’s nationalproportion significantly at the level of significance of 5%.

Blood typePROPORTION IN THE COUNTRYTHE NUMBER OF RECRUITED SOLDIERS
A40%210
B12%100
AB5%120
O43%570

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