On a ranch, a rancher can place a loop of rope, called a lasso, once in every 3 throws around a cow’s neck. What is the probability that the rancher will be able to place a lasso around a cow’s neck at least once in 4 attempts?  Select: A) 4/9 B) 5/9 C) 17/27 D) 23/27 E) 65/81
P(missing all 3)=(2/3)^4=16/81   P(success on at least one attempt)=1-16/81=65/81   The answer is 65/81.
<result>E</result>
On a ranch, a rancher can place a loop of rope, called a lasso, once in every 3 throws around a cow’s neck. What is the probability that the rancher will be able to place a lasso around a cow’s neck at least once in 4 attempts?