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slava [35]
3 years ago
13

A new vaccine claims to reduce the risk of contracting chickenpox from 80% to 20%. Which of the following statements is true reg

arding 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.
Mathematics
1 answer:
dlinn [17]3 years ago
6 0

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>

  • (80 - 20)/80*100% = 75%

<u>Correct choice is:</u>

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

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Answer:

a) 0.5 = 50% of flanges exceed 1 millimeter.

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Step-by-step explanation:

A distribution is called uniform if each outcome has the same probability of happening.

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P(X > x) = \frac{b - x}{b - a}

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So

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x = 1.05 - 0.9*0.1

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