Answer
a. .00195; it is unlikely
b. .0121
c. .487
Work Step by Step
a. We find that the probability is:
$(.125)^3 = .00195$
This is below 1 percent, so this event is unlikely.
b. We find that the probability is:
$=(.125)(.097)=.0121$
c. We first find the probability that they are all right handed:
$=.875^5=.513$
Thus, the probability that there is at least one that is left handed is:
$=1-.513=.487$
