SOLUTION: In a simple random sample of 19 gas stations in the Atlanta area, the price per gallon of regular gasoline has a mean of $2.12 and a (sample) standard deviation of $0.37. Use this
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Question 1076940: In a simple random sample of 19 gas stations in the Atlanta area, the price per gallon of regular gasoline has a mean of $2.12 and a (sample) standard deviation of $0.37. Use this sample data to find a 90% confidence interval for the mean price per gallon of all gas stations in the Atlanta area.
$___________<μ< $___________
The margin of error for this confidence interval is: $____________ Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! t=1.734, df=18 0.95
CI is mean +/- 1.734 s/sqrt(n)
=2.12+/-1.734*0.37/sqrt(19), interval is 0.147, which is margin of error
($1.97, $2.27)
