Quality Managers at CentralGen say that 12% of the letters they post contain errors. A sample of 200 letters was checked and 31 of them contained errors. What do these results suggest?

Quality Managers at CentralGen say that 12% of the letters they post contain errors. A sample of 200 letters was checked and 31 of them contained errors. What do these results suggest?

Quality Managers at CentralGen say that 12% of the letters they post contain errors. A sample of 200 letters was checked and 31 of them contained errors. What do these results suggest?
Quality Managers at CentralGen say that 12% of the letters they post contain errors. A sample of 200 letters was checked and 31 of them contained errors. What do these results suggest?