This is also given Exercise. A CBS News poll taken in December 2009 asked a random sample of 1048 adults in the United States, "In general, do you think the education most children are getting today in public schools is better, is about the same, or is worse than the education you received?" About 34% said "Better," 24% said "About the same," and 38% said "Worse." (The remaining 4% were unsure.)
a. What is the population for this survey?
b. What is the approximate margin of error for this survey?
c. Provide an interval that is 95% certain to cover the true percentage of U.S. adults in December 2009 who would have answered "Better" to this question if asked.
Exercise
A CBS News poll taken in December 2009, asked a random sample of 1048 adults in the United States, "In general, do you think the education most children are getting today in public schools is better, is about the same, or is worse than the education you received?" About 34% said "Better," 24% said "About the same," and 38% said "Worse." (The remaining 4% were unsure.)
a. What is the population for this survey?
b. What is the approximate margin of error for this survey?
c. Provide an interval that is 95% certain to cover the true percentage of U.S. adults in December 2009 who would have answered "Better" to this question if asked.