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In: Statistics and Probability

In a sample of 1392 mosquitoes trapped in a region, 1173 tested positive for a certain...

In a sample of 1392 mosquitoes trapped in a region, 1173 tested positive for a certain disease. In a sample of 1457 mosquitoes trapped in a different region, 1196 tested positive for the disease. Compute the test statistic for a hypothesis test to compare the population proportions of mosquitoes in the regions that tested positive for the disease. Assume that the conditions for a hypothesis test for the difference between the population proportions are met. Round your answer to two decimal places.

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Expert Solution

We have given for the example              
              
x1=1173          
n1=1392          
              
x2=1196          
n2=1457          
      
Estimate for sample proportion 1
              
Estimate for sample proportion 2
  
Pooled proportion
              
Z test statistic formula is               


=1.55  

Z test statistic = 1.55

orchestra answered 1 year ago
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