The following data are the amounts that a sample of 15 customers spent for lunch ($) at a fast-food restaurant. Complete parts (a) through (d) below. 7.12 6.83 5.94 7.40 6.29 5.81 6.47 8.28 9.46 6.52 5.56 7.90 8.28 9.60 4.89 a. Construct a 95% confidence interval estimate for the population mean amount spent for lunch (S) at a fast-food restaurant. (Round to two decimal places as needed. Do not include the $ symbol in your answer.)

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The following data are the amounts that a sample of 15 customers spent for lunch ($) at a fast-food restaurant. Complete parts (a) through (d) below.
5.94
7.40 6.29 5.81 6.47 8.28 9.46 7.12 6.83
4.89 6.52 5.56 7.90 8,28 9.60
a. Construct a 95% confidence interval estimate for the population mean amount spent for lunch (S) at a fast-food restaurant.
(Round to two decimal places as needed. Do not include the $ symbol in your answer.)
G
Transcribed Image Text:The following data are the amounts that a sample of 15 customers spent for lunch ($) at a fast-food restaurant. Complete parts (a) through (d) below. 5.94 7.40 6.29 5.81 6.47 8.28 9.46 7.12 6.83 4.89 6.52 5.56 7.90 8,28 9.60 a. Construct a 95% confidence interval estimate for the population mean amount spent for lunch (S) at a fast-food restaurant. (Round to two decimal places as needed. Do not include the $ symbol in your answer.) G
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Step 1: For calculating the confidence interval we have

7.40, 6.29, 5.81, 6.47, 8.28, 9.46, 7.12, 6.83, 5.94, 4.89, 6.52, 5.56, 7.90, 8.28, 9.60

We have to find the 95% confidence interval for population mean amount spent for lunch at a fast food restaurant


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