In order to estimate the difference in the yearly incomes

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In order to estimate the difference in the yearly incomes of marketing managers in the East and West of the United States, the information below was gathered. Compute and explain a 95% confidence interval estimate of the difference in average yearly incomes between the two regions of the country.

East West
Sample size 40 45
Sample mean $72,000 $78,000
Sample standard deviation $6,000 $8,000

Reference no: EM13621601

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