# Hypothesis Testing - z score

Past data indicates an 80% (0.8) success rate in treating a certain medical problem. A new treatment is used on 100 patients in a clinical trial. It is successful in 87% (0.87) of the cases. What is the value of the z-score that can be used to test the null hypothesis that the success rate is 80%?

Solution Summary

Solution shows the value of the z-score that can be used to test the null hypothesis that the success rate is 80%.

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Sarang Jagdale, PhD (IP)

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Active since 2013

BEng, Visvesvaraya National Institute of Technology
PhD (IP), Indian Institue of Management Bangalore

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