Using Excel

1 The daily sales of Burger Baby restaurants follow the normal distribution with a standard deviation of $4000. cements A sample is taken of 50 restaurants and the average sales were $40,000/day. What is the 99% confidence interval for the average restaurant sales? Answer es ments ssions es What Is the probability that the average sales are really $36,000 or less per day? Answer Assume the actual population average is $40,000 per day es le utor ce 365 C Library 2 A sample of the sales at 50 Haute Dog restaurants is taken and the sample mean is $30,000 per day with a sample standard deviation of $2000. The population standard deviation is not known. C Penji Tutoring What is the 90% confidence interval for the daily sales at all restaurants. Answer What is the probability that the average sales are really $32,000 or more per day? Answer Assume that the population average is $30,000 per day and the std. Deviation is $2k