Picking one person you have a 0.99 probability of being nervous
So picking a person who is not nervous would be 0.01 probability.
The probability f both being nervous would be the probability of one being nervous multiplied by the probability of the other one being nervous:
0.99 x 0.99 = 0.9801 = 98.01%
To find the probability of at least one being nervous, find the probability of both not being nervous and subtract that from 1:
The probability of both not being nervous:
0.01 x 0.01 = 0.0001
The probability of at 1 being nervous = 1 - 0.0001 = 0.9999 = 99.99%
Round the answers as needed.
