II. A study was made to compare the costs of supporting a family of four Americans...

II. A study was made to compare the costs of supporting a family of four Americans for a year in different foreign cities. The lifestyle of living in the United States on an annual income of $75,000 was the standard against which living in foreign cities was compared. A comparable living standard in Toronto and Mexico City was attained for about $64,000. Suppose an executive wants to determine whether there is any difference in the average annual cost of supporting her family of four in the manner to which they are accustomed between Toronto and Mexico City. Use the data from the previous table to construct a 95% confidence interval to estimate the difference in average annual costs between the two cities. She assumes the annual cost is normally distributed. (Outputs sheet page 3 and 4 can help you for this problem) TORONTO MEXICO CITY

Sample Mean $67381.82 and $63481.82

Sample Variance 4273636.364 and 2541636.364

Observations 11 and 11

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orchestra answered 1 year ago

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