Harris Interactive conducted a poll of U.S. adults and asked, When there is a voiceover in a

Question:

Harris Interactive conducted a poll of U.S. adults and asked, "When there is a voiceover in a commercial, which type of voice is more likely to sell me a car?" Results of the survey are in the bar graph.

Convincing Voice in Purchasing a Car 1600 1448 1400 1200 1000 800 614 600 - 400 154 200 Female Voice Male Voice Makes No

(a) How many participants were in the survey?
(b) What is the relative frequency of the respondents who indicated that it made no difference which voice they heard?
(c) Redraw the graph as a Pareto chart.