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A study is designed to investigate whether there is a

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Subject: Statistics
Due on: 11/25/2017
Posted On: 11/25/2017 12:11 PM

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Chi-Square Test for Independence of Two Groups

A study is designed to investigate whether there is a difference in response to various treatments for patients with chronic pain. The data is shown below. Is there a statistically significant difference in the proportions of patients who show improvement? Between treatment 1 and 2? Use a 5% level of significance.

Critical value =

_________// Symptoms worsened // No effect // Symptoms improved // Total

Treatment // 1 // 22 // 14 // 14 // 50

Treatment // 2 // 14 // 15 // 21 // 50

Tags investigate designed study symptoms difference treatment level improvementbetween patients proportions significancecritical value effect improved worsened 50treatment statisticallysignificant totaltreatment data designed investigatewhether study groupsa test independenceof response various pain chisquare chronic patientswith treatments shown

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