Final answer:
The incorrect statement about printers is that printer speed is measured in the number of words printed per minute; it is instead measured in pages per minute (ppm).The correct option is 4.
Step-by-step explanation:
The question asks to identify the incorrect statement about printers among the provided options. The incorrect statement is that 'printer speed is measured in the number of words printed per minute.' Printer speed is typically measured in pages per minute (ppm) rather than words per minute. This measurement reflects how fast a printer can produce pages of text under standardized conditions.
The other statements are correct: Printer resolution is indeed measured in dots per inch (dpi), which reflects the output detail and sharpness the printer is capable of producing. Printer output is commonly referred to as 'hard copy,' which denotes a physical copy of a document. Also, memory inside a printer is used to store printed documents temporarily and manage the printing instructions.