Consumer Reports magazine (June 2013) reported purchasing samples of ground turkey from different brands to test for the presence of bacteria. The table below shows the number of samples that tested positive for Enterococcus bacteria for packages that claimed no use of antibiotics in the processing of the meat and for packages in which no such claim was made.

a. Find the difference in the proportion of packages that tested positive and interpret.
b. Find the ratio of the proportion of packages that tested positive and interpret.

Transcribed Image Text:

Bacteria in Ground Turkey Test result for Enterococcus Positive Package Claim Negative 26 23 20 No claim No antibiotics 5 5