## Elementary Statistics (12th Edition)

a) $0.00195$, unlikely b) $0.0121$ c) $0.487$
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: $1−0.513=0.487$