For each of the following situations, state whether the parameter of interest is a mean or a proportion. (a) A poll shows that 64% of Americans personally worry a great deal about federal spending and the budget deficit.
(b) A survey reports that local TV news has shown a 17% increase in revenue between 2009 and 2011 while newspaper revenues decreased by 6.4% during this time period.
(c) In a survey, high school and college students are asked whether or not they use geolocation services on their smart phones.
(d) In a survey, internet users are asked whether or not they purchased any Groupon coupons.
(e) In a survey, internet users are asked how many Groupon coupons they purchased over the lastyear.