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A random sample of 40 companies with assets over $10 million was surveyed and asked to indicate their industry and annual computer technology expense. The
A random sample of 40 companies with assets over $10 million was surveyed and asked to indicate their industry and annual computer technology expense. The ANOVA comparing the average computer technology expense among three industries rejected the null hypothesis. The mean square error (MSE) was 198. The following table summarized the results: Education Tax Services Food Services Number Sampled 10 14 16 Mean Expense (1,000,000s) 5 215 26 When comparing the mean annual computer technology expense for companies in the tax services and education industries, which of the following 95% confidence interval can be constructed? 16.5 + 2.026 x 5.830 16.5 + 2.021 x 5.830 16.5 + 2.021 x 16.9 16.5 + 2.026 x 16.96
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