Question
Two groups of 100 people each were taken for testing the use of vaccine. 15 persons contracted the disease out of the inoculated persons, while
Two groups of 100 people each were taken for testing the use of vaccine.
15 persons contracted the disease out of the inoculated persons, while
25 contracted the disease in the other group. Test the efficiency of the vaccine,
use X square value (at 5 percent level for one degree of freedom the value of
X square = 3.82)
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Cambridge IGCSE And O Level Additional Mathematics
Authors: Val Hanrahan, Jeanette Powell
1st Edition
1510421645, 978-1510421646
