1Smars spent for lunch ($) at a fast-food restaurant. Complete parts a and 4.85 5.37 5.53 6.77 7.28 7.55 8.39 8.63 9.79 ..... a. Construct a 99% confidence interval estimate for the population mean amount spent for lunch at a fast-food restaurant, assuming a no The % confidence interval estimate is from $ 5.27 to $ 8.99. (Round to two decimal places as needed.) b. Interpret the interval constructed in (a). Choose the correct answer below. O A. 99% of the sample data fall between the limits of this confidence interval.

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A: It is an important part of statistics . It is widely used .

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A: Let's solve.

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