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A new vaccine claims to reduce the risk of contracting chickenpox from 80% to 20%. Which of the following statements is true regarding the claim? The vaccine decreases the risk of contracting chickenpox by 75 percentage points or a decreases the risk by contract contract in chickenpox by 60 percentage points or by contracting by 300 percentage points.

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mhanifa

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%.

This reduction in percentage is:

  • (80 - 20)/80*100% = 75%

Correct choice is:

  • The vaccine decreases the risk of contracting chickenpox by 75 percentage

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