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The claim is that the proportion of adults who smoked a cigarette in the past week...

The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.30​, and the sample statistics include n=1602 subjects with 497 saying that they smoked a cigarette in the past week. Find the value of the test statistic.

Math   Statistics-And-Probability   
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Answer #1

We have for given example,                      
Population proportion value is =0.3                  
x=497                  
                      
n=1602                  

Estimate for sample proportion
                      
Z test statistic formula for proportion


=0.89                  
  

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