b. Compute the sample standard deviation (to 2 decimals). S = 70.65 c. Compute a 95% confidence interval for the population standard deviation (to 2 decimals). Use Table 11.1. 95%CI = 227.14 293.18

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Chapter1: Combinatorial Analysis
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According to the 2017 Corporate Travel Index compiled by Business Travel News, the average daily cost for business travel in the
United States rose to $321 per day (Executive Travel website). The file Travel contains sample data for an analogous study on the
estimated daily living costs for an executive traveling to various international cities. The estimates include a single room at a four-
star hotel, beverages, breakfast, taxi fares, and incidental costs. Click on the datafile logo to reference the data.
DATA file
City
Daily Living Cost ($)
City
Daily Living Cost ($)
Bangkok
242.87
Мехico City
212.00
Bogota
260.93
Milan
284.08
Cairo
194.19
Mumbai
139.16
Dublin
260.76
Paris
436.72
Frankfurt
355.36
Rio de Janeiro
240.87
Hong Kong
346.32
Seoul
310.41
Johannesburg
165.37
Tel Aviv
223.73
Lima
250.08
Toronto
181.25
London
326.76
Warsaw
238.20
Madrid
283.56
Washington, D.C.
250.61
a. Compute the sample mean (to 2 decimals).
260.21
b. Compute the sample standard deviation (to 2 decimals).
S =
70.65
c. Compute a 95% confidence interval for the population standard deviation (to 2 decimals). Use Table 11.1.
95%CI = ( 227.14
293.18
Transcribed Image Text:According to the 2017 Corporate Travel Index compiled by Business Travel News, the average daily cost for business travel in the United States rose to $321 per day (Executive Travel website). The file Travel contains sample data for an analogous study on the estimated daily living costs for an executive traveling to various international cities. The estimates include a single room at a four- star hotel, beverages, breakfast, taxi fares, and incidental costs. Click on the datafile logo to reference the data. DATA file City Daily Living Cost ($) City Daily Living Cost ($) Bangkok 242.87 Мехico City 212.00 Bogota 260.93 Milan 284.08 Cairo 194.19 Mumbai 139.16 Dublin 260.76 Paris 436.72 Frankfurt 355.36 Rio de Janeiro 240.87 Hong Kong 346.32 Seoul 310.41 Johannesburg 165.37 Tel Aviv 223.73 Lima 250.08 Toronto 181.25 London 326.76 Warsaw 238.20 Madrid 283.56 Washington, D.C. 250.61 a. Compute the sample mean (to 2 decimals). 260.21 b. Compute the sample standard deviation (to 2 decimals). S = 70.65 c. Compute a 95% confidence interval for the population standard deviation (to 2 decimals). Use Table 11.1. 95%CI = ( 227.14 293.18
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