Answer
a) $0.00195$, unlikely
b) $0.0121$
c) $0.487$
Work Step by Step
a) We find that the probability is:
$(0.125)^3=0.00195$
This is less than $1\%=0.01$, so the event is unlikely.
b. We find that the probability is:
$(0.125)(0.097)=0.0121 $
c. We first find the probability that they are all right handed:
$0.875^5=0.513$
Thus, the probability that there is at least one that is left handed is:
$1−0.513=0.487$
