A hypothesis test is to be performed. State the null and alternative hypotheses.In a clinical study of an arthritis medication, 28% of those taking the placebo reported improvement. The manufacturer of the medication claims that among those taking the medication, the proportion reporting improvement will be higher than this.

Question

A. Null hypothesis: proportion reporting improvement < 28%  
Alternative hypothesis: proportion reporting improvement > 28%
B. Null hypothesis: proportion reporting improvement > 28%  
Alternative hypothesis: proportion reporting improvement = 28%
C. Null hypothesis: proportion reporting improvement = 28%  
Alternative hypothesis: proportion reporting improvement > 28%
D. Null hypothesis: proportion reporting improvement = 28%  
Alternative hypothesis: proportion reporting improvement ? 28%

Answer 1

Answer: C