Question

A cruise company would like to estimate the average beer consumption to plan its beer inventory levels on future? seven-day cruises.? (The ship certainly? doesn't want to run out of beer in the middle of the? ocean!) The average beer consumption over 16 randomly selected ?seven-day cruises was 81,759 bottles with a sample standard deviation of 4,526 bottles. Complete parts a and b below.

a. construct a 90% confidence interval to estimate the average beer consumption per cruise.

The 90% confidence interval to estimate the average beer consumption per cruise is from a lower limit of _____ to an upper limit of ___ bottles. Round to the nearest whole numbers.

b. What assumption can be made about the problem above?

- The only assumption needed is that the population follows the? Student's t-distribution.

--The only assumption needed is that the population size is larger than 30.

--The only assumption needed is that the population distribution is skewed to one side.

--The only assumption needed is that the population follows the normal probability distribution.

Answer 1

he 90% confidence interval to estimate the average beer consumption per cruise is from a lower limit of 79775 to an upper limit of 83743  bottles

b)

-The only assumption needed is that the population follows the normal probability distribution.