Concept explainers
A marketing firm is hired to conduct research into the listening habits of drivers in a large urban area. On the first day, 121 drivers were surveyed: 26 listen to FM radio while driving, 4 of whom listen to only FM. Eight more listen to FM and AM only, while 4 listen to FM and satellite only. There were 6 that listen to only AM, 22 that listen to only satellite, and 69 that listen to at least one of the three.
- (a) Are there more people who listen to satellite radio, or more who listen to none of the three types in the survey?
- (b) How many more listen to AM radio than FM?
- (c) How many listen to some form of radio, but not AM?
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MATH IN OUR WORLD (LL) W/18 WEEKS ALEKS
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