A poll of a random sample of 1800 adults reported that respondents slept an average of 6.5 hours on weekdays and 7.1 hours on weekends, and that 20% of respondents got eight or more hours of sleep on weekdays, whereas 45% got eight or more hours of sleep on weekends. Complete parts a and b below. a. To compare the means or the percentages using inferential methods, should you treat the samples on weekdays and weekends as independent samples or as dependent samples