Answer: 0.7748
Step-by-step explanation:
Given : Number of bit bulls at the pound = 18
Number of pit bulls have attacked another dog in the last year =4
The proportion of pit bulls have attacked another dog in the last year:
Number of the pit bulls selected = 6
The probability of that none of the pit bulls in Joe's group attacked another dog last year :
By using binomial , the probability that at least one of the pit bulls in Joe's group attacked another dog last year is given by :-
Hence, the required probability = 0.7748