New Horizons Airlines wants to forecast the mean number of unoccupied seats per flight to Germany next year. To develop this forecast, the records of 49 flights are randomly selected from the files for the past year, and the number of unoccupied seats is noted for each flight. The sample mean and standard deviation are 8.1 and 5.7 seats, respectively. Develop a point and 95% interval estimate of the mean number of unoccupied seats per flight during the past year. Forecast the mean number of unoccupied seats per flight to Germany next year. Discuss the accuracy of this forecast.