Q 107

There are currently 18 pit bulls at the pound.Of the 18 pit bulls,four have attacked another dog in the last year.Joe,a member of the staff,randomly selects six of the pit bulls for his group.What is the probability that exactly one of the pit bulls in Joe's group attacked another dog last year?
A) 0.1618
B) 0.3235
C) 0.4314
D) 0.4853

Q 108

There are currently 18 pit bulls at the pound.Of the 18 pit bulls,four have attacked another dog in the last year.Joe,a member of the staff,randomly selects six of the pit bulls for his group.What is the probability that at least one of the pit bulls in Joe's group attacked another dog last year?
A) 0.1618
B) 0.4314
C) 0.5686
D) 0.8382

Q 109

The following table shows the number of students who did not attend statistics class over the 30 class meetings last semester. What is the expected number of absent students per class for the next semester?
A) 2.123
B) 1.800
C) 1.965
D) 1.246