Answer:
- The vaccine decreases the risk of contracting chickenpox by 75 percentage
Step-by-step explanation:
Risk of contracting chickenpox is reduced from 80% to 20%.
<u>This reduction in percentage is:</u>
<u>Correct choice is:</u>
- The vaccine decreases the risk of contracting chickenpox by 75 percentage
Answer: A
Step-by-step explanation: A is the statistical question since it complies many test scores together
No, because if they were equal the second equation should be 225/(15x3), not (15/3).