Question: In this example from the text why is the confidence interval for those who said they were always stressed wider than that of the people

In this example from the text why is the confidence interval for those who said they were "always" stressed wider than that of the people who answered "sometimes" stressed and "never" stressed?

ordinal-level responses from which to choose: Always, Often, Sometimes, Hardly Ever, Never. Let's look at the results for three of these groups. This time, I'm using a 99% confidence interval. Stressed at Work? n Mean BMI SD 99% Confidence Interval Always 15 29 47 7.72 23.54

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