A new vaccination is being used in a laboratory experiment to investigate whether it is effective. There are 300300 subjects in the study. Is there sufficient evidence to determine if vaccination and disease status are related? Vaccination Status Diseased Not Diseased Total Vaccinated 8181 9191 172172 Not Vaccinated 6464 6464 128128 Total 145145 155155 300300 Copy Data Step 2 of 8 :   Find the expected value for the number of subjects who are vaccinated and are diseased. Round your answer to one decimal place.

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.