In: Statistics and Probability
Calculate the test statistic. A research company claims that no more than 55% of Americans regularly watch FOX News. You decide to test this claim and ask a random sample of 425 Americans if they watch this network regularly. Of the 425 sampled, 255 respond yes. Calculate the test statistic for the hypothesis test. a) -2.07 b) 1.645 c) -1.96 d) 2.07 e) None of the above.
We have for given example,      
           
Population proportion value is =0.55      
       
x=255          
   
          
       
n=425          
   
          
Estimate for sample proportion =0.6      
       
          
       
Z test statistic formula for proportion  
           
   
=2.07  
| d) 2.07 |