The radius of a circular garden, that is the measure from its center to its outer perimeter, is four meters in length. Recalling that the circumference of a circular region is its diameter times pi, how many meters of edging will be needed to surround the garden? Group of answer choices 7.14 meters 12.57 meters 20.25 meters 25.13 meters

Probability of both people being allergic: 0.81%.

Probability of at least one being allergic: 17.19%

Step-by-step explanation:

If the probability of one person being allergic to pollen is 9%, the probability of two people selected being both allergic is:

0.09 * 0.09 = 0.0081 = 0.81%

The probability of at least one being allergic can be calculated with 1 minus the probability of both not being allergic.

If the probability of being allergic is 9%, the probability of not being allergic is (1 - 0.09) = 0.91 = 91%.

So, the probability of both not being allergic is:

0.91 * 0.91 = 0.8281

Then, The probability of at least one being allergic is:

1 - 0.8281 = 0.1719 = 17.19%