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A hotel bartender serves an average of 42 drinks per hour with a σn-1 = 7.3...

A hotel bartender serves an average of 42 drinks per hour with a σn-1 = 7.3 drinks per hour based on a sample of 15 hours.

What is the standard deviation of this sample?

What is the numerical range for a 95% confidence interval for the average number of drinks this hotel bartender can serve in 1 hour?

What is the numerical range for a 99% confidence interval for the average number of drinks this hotel bartender can serve in 1 hour?

What percentage of the time is the numerical range created for question #48 incorrect in predicting the numerical range of the average number of drinks served by a hotel bartender in 1 hour?

What is the error associated with the 99% confidence interval created in question #48?

Math   Statistics-And-Probability   
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