no 122 14 Hospitals must keep enough antibiotics on hand to treat infectious diseases . Researchers want to'p 1 determine whether the infectious disease . rate is high . in some months than on others , To find out , researchers took a sample of 192 hospital patients in januaryia and found 32 were being treated for an infectious disease. in an independent Samplet of 403 patient and admitted in may 34 were treated for an infectious disease . Givess appoint estimate of the difference In the infectious disease admission rate din january and Mall. A . 086 B . 083 S C . 093 D . 079