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 $321 per day (Executive Travel website). The file Travel contains sample data for an analogous study on the estimated daily living costs for an executive traveling to various international cities. The estimates include a single room at a four-star hotel, beverages, breakfast, taxi fares, and incidental costs. City Daily Living Cost ($) City 1 242.87 City 2 260.93 City 3 194.19 City 4 260.76 City 5 355.36 City 6 346.32 City 7 165.37 City 8 250.08 City 9 326.76 City 10 283.56 City Daily Living Cost ($) City 11 213.00 City 12 284.08 City 13 139.16 City 14 436.72 City 15 240.87 City 16 310.41 City 17 223.73 City 18 181.25 City 19 238.10 City 20 250.61 (a)Compute the sample mean (in dollars). (Round your answer to the nearest cent.) $______   (b)Compute the sample standard deviation (in dollars). (Round your answer to the nearest cent.) $________   (c)Compute a 95% confidence interval (in dollars) for the population standard deviation. (Round your answers to the nearest cent.) $________ to $_________

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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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 $321 per day (Executive Travel website). The file Travel contains sample data for an analogous study on the estimated daily living costs for an executive traveling to various international cities. The estimates include a single room at a four-star hotel, beverages, breakfast, taxi fares, and incidental costs.
City Daily Living
Cost ($)
City 1 242.87
City 2 260.93
City 3 194.19
City 4 260.76
City 5 355.36
City 6 346.32
City 7 165.37
City 8 250.08
City 9 326.76
City 10 283.56
City Daily Living
Cost ($)
City 11 213.00
City 12 284.08
City 13 139.16
City 14 436.72
City 15 240.87
City 16 310.41
City 17 223.73
City 18 181.25
City 19 238.10
City 20 250.61
(a)Compute the sample mean (in dollars). (Round your answer to the nearest cent.) $______
 
(b)Compute the sample standard deviation (in dollars). (Round your answer to the nearest cent.) $________
 
(c)Compute a 95% confidence interval (in dollars) for the population standard deviation. (Round your answers to the nearest cent.)
$________ to $_________
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