What is the margin of error and confidence level

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Reference no: EM132351276

Actual data] A survey by the Pew Research Center was recently conducted regarding teens and text messaging! They surveyed 799 teens in the U.S. (ages 12 to 17 years old, who used text messaging) and found that 18% of them sent more than 200 texts a day. (The margin of error was +/- 4.8%, accurate 19 times out of 20.)

a) What is the margin of error and confidence level of this survey?

What is the confidence interval (in %) for this survey?) If the number of teenagers aged 12 to 17 in the United States is 25 million, what is the confidence interval for that population?

If you wanted to redo the survey in order to get a lower margin of error (but while keeping the confidence level the same), what could you do?

Reference no: EM132351276

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