the US department of transportation reported that in a large study of mobile phones use while driving conducted in 2015 4.5% of female drivers observed and 3.5% of male drivers observed were using a handheld phone while driving. n suppose that these percentages were based on observations from independent random samples of 1400 male drivers and 1400 female drivers.

b. assume that it is reasonable to regard these samples as representative of male drivers and female drivers in the united states. estimate the difference in the proportion of male drivers and the proportion of female drivers who use a mobile phone while driving using a 95% confidence interval. use Pmale - Pfemale. use table or SALT. round your answers to four decimal places.