The life expectancy of a laserprinter toner cartridge varies considerably, according to the toner and drum type and how the cartridge is used. Printed pages containing lots of graphics require more toner, whereas pages with mostly text require considerably less toner. Page coverage is usually measured as a proportion (or percentage). For example, a typical text page has approximately 0.050.05 coverage. A random sample of printed pages from an office printer was obtained, and the page coverage was carefully measured. To view the data set, click the link for the preferred softwareformat.

Is there any evidence to suggest the data are from a nonnormalpopulation?

Calculate the value of the interquartile range divided by the standard deviation,IQR/.deviation,IQR/s.

(Use decimal notation. Round your answer to two decimalplaces.)

IQR/=