(Answered) Confidence interval for the mean

Statistics

Problem: A study was conducted to investigate the effectiveness of acupuncture in reading pain. Results for 6 random selected subjects are given in the accompanying table. Be detailed in your response and provide examples also.

Required:

Question 1: Is there sufficient evidence to conclude the acupuncture has no effect in reducing pain. .05 significance level.

Question 2: Construct 95% confidence interval for the mean of the "before-after" differences.

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