When the national economy goes from bad to better, market research shows changes in the sales at various types of restaurants. Projected 2011 sales at quick-service restaurants are $164.8 billion, which was 3% better than in 2010. Projected 2011 sales at
full-service restaurants are $184.2 billion, which was 1.2% better than in 2010. How will the dollar growth in quick-service restaurants sales
compared to the dollar growth for full-service places?

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean µ = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean µ = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (± 1)?