In 2005, CNN.com reported on a survey of 1,000 young adults, including those wit
ID: 3223277 • Letter: I
Question
In 2005, CNN.com reported on a survey of 1,000 young adults, including those with college degrees, college students, college dropouts, and full-time workers. The report mentions that "only 32% of young adults without a degree said parents strongly expected them to go to college-a huge gap from the 67% with degrees who got such encouragement. The survey's margin of sampling error was plus or minus 3 percentage points." a. In fact, the margin of sampling error is plus or minus 3 percentage points only when reporting on the entire sample of 1,000 individuals. Is it more or less than 3% when reporting on subgroups such as those with and those without college degrees? b. Keep in mind that fewer than 30% of all Americans older than their late twenties have a college degree. Which subgroup has a smaller margin of error: those with or those without a college degree?Explanation / Answer
a)It is more than 3% when we see in a particular subgroup because as the number of samples comes down the error becomes larger.
b)those with a college degree has smaller margin of error..
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