SOLUTION: HELP PLEASE !!! A telephone company survey of 600 randomly selected people determined that 76% of the people from ages 16 to 30 have a drivers license. The results are accurate w

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Question 1085733: HELP PLEASE !!!
A telephone company survey of 600 randomly selected people determined that 76% of the people from ages 16 to 30 have a drivers license. The results are accurate within plus or minus 4 percent points, 19 out of 20 times.
a) What is the margin of error?
b) What is the confidence interval?

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
A) The margin of error is 4% = 0.04 because "The results are accurate within plus or minus 4 percent points"

B) The confidence interval is 95% since 19/20 = 0.95 = 95%