SOLUTION: In a survey of 212 people at the local track and field championship, 72% favored the home team winning. Find the margin of error for the survey, and give and interval that is likel
Algebra.Com
Question 193875: In a survey of 212 people at the local track and field championship, 72% favored the home team winning. Find the margin of error for the survey, and give and interval that is likely to contain the exact percent of all people who favor the home team winning.
I got the Margin of Error: 6.86% but I have no idea on how to get the interval.
Thanks
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
In a survey of 212 people at the local track and field championship, 72% favored the home team winning. Find the margin of error for the survey, and give and interval that is likely to contain the exact percent of all people who favor the home team winning.
I got the Margin of Error: 6.86% but I have no idea on how to get the interval.
--------------------------------------
To generate a confidence interval you need a sample-proportion (p-hat)
and a margin of error (E).
------------------
Your p-hat is 72% because that is the proportion of the sample you are
considering.
--------------
C.I. : p-hat - E < p < p-hat + E
----------------------------------------
Cheers,
Stan H.
RELATED QUESTIONS
Please Help, I'm so confused on how to even start. Thanks!
Homework question:
2... (answered by stanbon)
When two teams battle in a championship final, the Stars have a 54% chance of winning a... (answered by ikleyn,robertb)
A survey was conducted to determine whether people were connected to the internet at... (answered by macston)
Four women’s college basketball teams are participating in a single-elimination holiday... (answered by Boreal)
Four women’s college basketball teams are participating in a single-elimination holiday... (answered by stanbon)
In a sample of 100 Republicans, 72 favored the president’s anti - drug program; while (answered by Boreal)
In a sample of 100 Republicans, 72 favored the president’s anti - drug program; while (answered by Boreal)
In a survey of 320 doctors. 50% more favored Brand X pain reliever than Brand y. How many (answered by stanbon)
Four women’s college basketball teams are participating in a single-elimination holiday (answered by greenestamps)