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Could you show me how to solve the attached problem.
It's long, but it's still a basic statistics problem.

The question has three parts:

a) is there significant difference between the two?

b) what does the plot tell you that the confidence interval doesn't?


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Solution Summary

The solution is provided in two separate attachments with explanation given for each question.

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Hope this helps. It might be a bit messy.
a) Includes two solutions to the same problem. One uses the individual data from ...

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