a study was conducted to determine the effect...
a study was conducted to determine the effectiveness of a new serum for treating diphtheria, a common and often deadly respiratory disease. a researcher conducted his study over a one - year period in one particular hospital. new diphtheria patients admitted to the hospital received different treatments based on the day of admission. in one set of days (call them \even\ days for convenience), the patients were treated with the new serum daily and received the standard treatment. patients admitted on alternate days (the \odd\ days) received just the standard treatment. over the one - year period of the study, 8 of the 231 patients admitted on the \even\ days and treated with the serum died, whereas 26 of the 234 patients admitted on the \odd\ days died. complete parts (a) and (b) below.\n(b) describe the sampling frame for the study. choose the correct answer below.\na. the sampling frame consisted of the individuals admitted to any hospital during the one - year period and having serious diphtheria symptoms.\nb. the sampling frame consisted of any individuals having serious diphtheria symptoms.\nc. the sampling frame consisted of the individuals admitted to that particular hospital during the one - year period.\nd. the sampling frame consisted of the individuals admitted to that particular hospital during the one - year period and having serious diphtheria symptoms.