SOLUTION: A random sample of 47 cars in the drive thru of a popular fast food restaurant revealed an average bill of $17.92 per car. The population standard deviation is $6.35. Estimate the
Algebra.Com
Question 1081973: A random sample of 47 cars in the drive thru of a popular fast food restaurant revealed an average bill of $17.92 per car. The population standard deviation is $6.35. Estimate the mean bill for all cars from the drive thru with 96% confidence. Round your answers to two decimal places.
$_______ < u < $___________
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A random sample of 47 cars in the drive thru of a popular fast food restaurant revealed an average bill of $17.92 per car. The population standard deviation is $6.35. Estimate the mean bill for all cars from the drive thru with 96% confidence. Round your answers to two decimal places.
-----
sample mean:: 17.92
ME = z*s/sqrt(n) = 1.8807*6.35/sqrt(47) = 1.7421
------------------------
96% CI:: 17.92-1.7421 < u < 17.92+1.7421
$16.18 < u < $19.66
------------------
Cheers,
Stan H.
--------------
RELATED QUESTIONS
Use the data in the following​ table, which lists​ drive-thru order accuracy at... (answered by ikleyn)
The Population mean time a customer spends at a drive-thru window at a local fast food... (answered by Theo)
A local fast-food restaurant has determined that 10% of drive-thru orders are filled... (answered by edjones)
If the total bill at a restaurant for 12 people is $493.83, including an 18% tip, what... (answered by stanbon)
The average hourly wage of workers at a fast food restaurant is $7.75. Assume the wages... (answered by stanbon)
The waiting time until a customer is served at a fast food restaurant during lunch hours... (answered by Boreal)
Question 1
A fast food restaurant claims that the mean time is not equal to 3 minutes. (answered by stanbon)
The average hourly wage of workers at a fast food restaurant is $6.50/hr with a standard... (answered by Boreal)
This is a statistics homework question, I'm a bit lost on how to go about it. I would... (answered by ewatrrr)