A new vaccination is being used in a laboratory experiment to investigate whethe

Question

A new vaccination is being used in a laboratory experiment to investigate whether it is effective. There are 202 subjects in the study. is there sufficient evidence to determine if vaccination and disease status are related? Vaccination Status Diseased Not Diseased Total 89 42 58 100 47 Not Vaccinated 113 Total 102 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. Tables Keypad Answer How to enter your answer Previous Step Answers

Explanation / Answer

The formula to find expected value for contengency table is given by

Expected value= ((row total)×(column total))/N

Here, row total for the subjects who are vaccinated and diseased =89

and column total for the subjects who are vaccinated and diseased =100

N=202

Now,

Expected value =(89×100)/202 = 44.1

i.e.the expected value for the number of subjects who are vaccinated and are diseased = 44.1

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