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. 4.43 5.03 5.63 6.23 7.34 7.58 8.34 8.75 9.35 a....

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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. 4.43 5.03 5.63 6.23 7.34 7.58 8.34 8.75 9.35 a. Construct a 99% confidence interval estimate for the population mean amount spent for lunch at a fast-food restaurant, assuming a normal distribution. The % confidence interval estimate is from S to S (Round to two decimal places as needed.)