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(Solved): A restaurant had 80 customers yesterday. From a random sample of 25 customer bills, the average bill ...



A restaurant had 80 customers yesterday. From a random sample of 25 customer bills, the average bill is found to be $18 with a standard deviation of $4. Construct a 95% confidence interval to estimate the population mean bill. Multiple choice question. $16.35 to $19.65 $16.69 to $19.31 $16.43 to $19.57 $16.62 to $19.38


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The process for the confidence interval:


Step i) Values : Mean= 18, Sample Standard Deviation= 4, ...
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