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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:

0.108

Step-by-step explanation:

Using the poisson probability process :

Where :

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Given that :

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Total slice per batch = 15 * 3 = 45 slices

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Average number of raisin per slice, λ = 100/45 = 20/9

Hence,

Probability that a randomly chosen slice has no raising :

P(x = 0) = (e^-λ * λ^x) ÷ x!

P(x = 0) = (e^-(100/45) * (100/45)^0) ÷ 0!

P(x = 0) = (0.1083680 * 1) / 1

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8 0
3 years ago
How would I do this? Please explain instead of just giving me the answer.
djverab [1.8K]
According to the Pythagorean theorem, the square of the hypotenuse (the longest side) of a right-angled triangle equals to the sum of the squares of the other two sides. In this case, the ladder is the hypotenuse, which equals to the distance between the bottom of the ladder and the tree + the distance we want to find (x):
5² + x² = 13²
25 + x² = 169
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4 0
3 years ago
Make r the subject of the formula in 1 - E Rr​
Artemon [7]

Answer:

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Step-by-step explanation:

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8 0
2 years ago
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ycow [4]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
A spinner with 10 equally sized slices is shown below. (3 slices are blue, 2 are yellow, and 5 are rec the probability that the
Ainat [17]

Answer:

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Step-by-step explanation:

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     5 out of 10   = 5/10 = 1/2

5 0
2 years ago
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