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 195. The following table summarized the results: Education Tax Services Food Services Number Sampled 10 14 16 Mean Expense (1,000,000s) 2 15.5 20 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?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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13.5 + 2.026 × 13.96
13.5 + 2.021 × 5.78
13.5 + 2.026 × 5.78
13.5 + 2.021 × 13.9
Transcribed Image Text:Multiple Choice 13.5 + 2.026 × 13.96 13.5 + 2.021 × 5.78 13.5 + 2.026 × 5.78 13.5 + 2.021 × 13.9
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 195. The following table summarized the results:
Education
Tax Services
Food Services
Number Sampled
10
14
16
Mean Expense (1,000,000s)
2
15.5
20
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?
Transcribed Image Text: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 195. The following table summarized the results: Education Tax Services Food Services Number Sampled 10 14 16 Mean Expense (1,000,000s) 2 15.5 20 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?
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