SOLUTION: Police Chief Edward Wilkin of River City reports 500 traffic citations were issued last month. A sample of 35 of these citations showed the mean amount of the fine was $54, with a

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Question 667000: Police Chief Edward Wilkin of River City reports 500 traffic citations were issued last month. A sample of 35 of these citations showed the mean amount of the fine was $54, with a standard deviation of $4.50. Construct a 95 percent confidence interval for the mean amount of a citation in River City.
please be detailed and show all work
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Police Chief Edward Wilkin of River City reports 500 traffic citations were issued last month. A sample of 35 of these citations showed the mean amount of the fine was $54, with a standard deviation of $4.50. Construct a 95 percent confidence interval for the mean amount of a citation in River City.
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x-bar = 54
ME = 1.96*4.5/sqrt(35) = 1.4909
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95% CI: 54-1.4909 < u < 54+1.4909
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Cheers,
Stan H.