The table below contains the amount that a sample of nine customers spent for lunch (S) at a fast-food restaurant. Complete parts a and b below. 4.79 5.25 5.82 6.26 7.47 776 8.34 8.53 9.56 a....

Extracted text: The table below contains the amount that a sample of nine customers spent for lunch (S) at a fast-food restaurant. Complete parts a and b below. 4.79 5.25 5.82 6.26 7.47 776 8.34 8.53 9.56 a. Construct a 95% confidence interval estimato for the population mean amount spent for lunch at a fast-food restaurant, assuming a normal distribution. The % confidonce interval estimate is from S to S (Round to two decimal places as needed.)