What is the confidence interval using a critical value

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Assignment - Based on attached excel sheet answer these three questions -

1. What is the confidence interval using a critical value (2.66) for country code 8?

2. What is the confidence interval using a critical value (2.66) for country code 14?

3. Choose the best answer: Which of the country codes seems to show the presence of special cause variation.

Attachment:- Assignment File.rar

Reference no: EM132226651

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