A sample of 273 children with a history of bronchitis and a sample of 1046 without a history of the condition were distributed according to whether they had cough (day or night). The results are shown in the table Bronchitis No Cough cough Total YES 26 247 273 NO 44 1002 1046 Total 70 1249 1319 Can it be said that the proportion of coughs among those who have bronchitis is higher than in those who do not have bronchitis?

6. Una muestra de 273 ninos con historial de bronquitis y una muestra de 1046 sin historial de dicha condicion fueron distribuidos a base de si sufren de tos (diurnalo nocturna). Los resultados se muestran en la tabla Bronquitis Tose No Tose Total SI 26 247 273 NO 44 1002 1046 Total 70 1249 1319 Se puede afirmar que la proporcion de los que tosen entre los que tienen bronquitis es mayor que en los que no tienen bronquitis