A company is interested in estimating the costs of lunch in their cafeteria. After surveying employees, the staff calculated that a 95% confidence interval for the mean amount of money spent for lunch over a period of six months is ($ 780, $ 920). Now the organization is trying to write its report and considering the following interpretations. Comment on each.
a) 95% of all employees pay between $ 780 and $ 920 for lunch.
b) 95% of the sampled employees paid between $ 780 and $ 920 for lunch.
c) We’re 95% sure that employees in this sample averaged between $ 780 and $ 920 for lunch.
d) 95% of all samples of employees will have average lunch costs between $ 780 and $ 920.
e) We’re 95% sure that the average amount all employees pay for lunch is between $ 780 and $ 920.